![[Unicode]](https://www.unicode.org/webscripts/logo60s2.gif){kind=small}
|
Unicode 17.0.0 | Tech Site | Site Map | Search |
Unicode® 17.0.0 (Draft)
2025 September NN (Announcement)
STATUS: This is a preliminary draft page for an upcoming release. Some details may be missing or incorrect, and some links may be wrong or broken. During the alpha review period, errors are expected and feedback is not necessary. During the beta review period, feedback on errors will be helpful and appreciated.This page summarizes the important changes for the Unicode Standard, Version 17.0.0. This version supersedes all previous versions of the Unicode Standard.
- A. Summary
- B. Technical Overview
- C. Stability Policy Update
- D. Textual Changes and Character Additions
- E. Conformance Changes
- F. Changes in the Unicode Character Database
- G. Changes in the Unicode Standard Annexes
- H. Changes in Synchronized Unicode Technical Standards
- I. List of Components
- M. Implications for Migration
A. Summary
Unicode 17.0 adds NNNN characters, for a total of 15N,NNN characters. The new additions include NN new scripts:
- TBD
New Data Files for Unicode 17.0
- TBD
Synchronization
Several other important Unicode specifications have been updated for Version 17.0. The following four Unicode Technical Standards are versioned in synchrony with the Unicode Standard, because their data files cover the same repertoire. All have been updated to Version 17.0:
Specification Scope Data Files UTS #10, Unicode Collation Algorithm Sorting Unicode text UCA data UTS #39, Unicode Security Mechanisms Reducing Unicode spoofing Security data UTS #46, Unicode IDNA Compatibility Processing Compatible processing of non-ASCII URLs IDNA data
IDNA 2008 derived dataUTS #51, Unicode Emoji Emoji and their behavior Emoji data Some of the changes in Version 17.0 and associated Unicode Technical Standards may require modifications to implementations. For more information, see the migration and modification sections of UTS #10, UTS #39, UTS #46, and UTS #51.
See Sections D through H below for additional details regarding the changes in this version of the Unicode Standard, its associated annexes, and the other synchronized Unicode specifications.
See the following resource links for general information about Unicode versions and other information about the Unicode Standard and other publications of the Unicode Consortium.
- Archive of Unicode Versions
- About Versions
- Glossary of Unicode Terms
- References for the Unicode Standard
- Unicode Acknowledgements
- Technical Reports
- Unicode Emoji
B. Technical Overview
Version 17.0 of the Unicode Standard consists of:
- The core specification
- The code charts (delta and archival) for this version
- The Unicode Standard Annexes
- The Unicode Character Database (UCD)
The core specification gives the general principles, requirements for conformance, and guidelines for implementers. The code charts show representative glyphs for all the Unicode characters. The Unicode Standard Annexes supply detailed normative information about particular aspects of the standard. The Unicode Character Database supplies normative and informative data for implementers to allow them to implement the Unicode Standard.
Core Specification
The core specification for Version 17.0 is available for browsing online as per-chapter web pages. Because the full table of contents for the core specification is provided, with interactive links, no separate bookmarks page is provided for this release, nor are separate chapter links provided directly in this summary page for the Unicode Standard. Anchors for chapters, sections, tables, and figures in the core specification are shown with the convention of a "#" in the left margin of the heading or caption. Those anchors can be clicked on to provide custom bookmarks to any particular portion of the text, down to the level of subsections. Numbering of sections has been extended down to the subsection level, as well, to improve referenceabiity of precise content.
The HTML version of the core specification is authoritative. However, for convenience of reference, an archival version of core specification is also available as a single pdf. (NN MB)
Code Charts
Several sets of code charts are available. They serve different purposes:
Chart Type Description Latest Code Charts These charts are always the most current code charts available, and may be updated at any time. The charts are organized by scripts and blocks for easy reference. An online index by character name is also provided. Delta Code Charts These charts show the new blocks and any blocks in which characters were added specifically for Unicode 17.0.0. The new characters and any major updates to the representative glyphs are visually highlighted in these charts. Archival Code Charts These charts contain the entire set of characters, names and representative glyphs at the time of publication of Unicode 17.0.0. The delta and archival code charts are a stable part of this release of the Unicode Standard. They will never be updated.
Han Radical-Stroke Indices
There are a number of radical-stroke indices available to assist in the lookup of Han ideographs in the code charts.
Index Type Description Interactive An interactive CJK character lookup page that supports lookup either by code point or by radical and stroke values. IICore (3.8 MB) A static radical-stroke index PDF file limited to only the IICore repertoire. (This RS index is seldom updated.) Unihan Core 2020 (8.2 MB) A static radical-stroke index PDF file limited to only the Unihan Core 2020 repertoire. (This RS index is seldom updated.) Complete (NN MB) A static radical-stroke index PDF file that covers the entire CJK ideograph repertoire for Unicode 17.0. Complete A static data file that corresponds to the complete radical-stroke index for Unicode 17.0. The complete radical-stroke index is a stable part of this release of the Unicode Standard. It will never be updated.
Unicode Standard Annexes
STATUS: During the alpha review and beta review periods, links to individual UAXes (or UTSes) point to the proposed update for that document, if any. If no proposed update has been posted for the document, links point to the last published version of the document, for reference.Links to the individual Unicode Standard Annexes for this version are available in Section I, List of Components below. The summary list of significant changes in the content of each Unicode Standard Annex for Version 17.0 can be found in Section G, Changes in the Unicode Standard Annexes below.
Unicode Character Database
Data files for Version 17.0 of the Unicode Character Database are available. The ReadMe.txt in that directory provides a roadmap to the functions of the various subdirectories. Detailed documentation about the data files can be found in UAX #44, Unicode Character Database. Zipped versions of the UCD for bulk download are available, as well.
Version References
Version 17.0.0 of the Unicode Standard should be referenced as:
The Unicode Consortium. The Unicode Standard, Version 17.0.0, (South San Francisco: The Unicode Consortium, 2025. ISBN 978-1-936213-xx-x)
https://www.unicode.org/versions/Unicode17.0.0/The terms “Version 17.0” or “Unicode 17.0” are abbreviations for the full version reference, Version 17.0.0.
The citation and permalink for the latest published version of the Unicode Standard is:
The Unicode Consortium. The Unicode Standard.
https://www.unicode.org/versions/latest/A complete specification of the contributory files for Unicode 17.0 is found below in Section I, List of Components. For examples of how to cite particular portions of the Unicode Standard, see also the Reference Examples.
Errata
Errata incorporated into Unicode 17.0 are listed by date in a separate table. For corrigenda and errata after the release of Unicode 17.0, see the list of current Updates and Errata.
C. Stability Policy Update
No significant updates to the Character Encoding Stability Policies have occurred in the interval since the last release of the Unicode Standard.
D. Textual Changes and Character Additions
Changes in the Unicode Standard Annexes are listed in Section G.
Character Assignment Overview
NNNN characters have been added. Most character additions are in new blocks, but there are also character additions to a number of existing blocks. For details, see the delta code charts.
New Blocks
The following blocks are newly defined in Version 17.0:
Range Block Name NNNN..NNNN TBD E. Conformance Changes
There are no new conformance requirements for the core specification in Unicode 17.0.
F. Changes in the Unicode Character Database
The detailed listing of all changes to the contributory data files of the Unicode Character Database for Version 17.0 can be found in UAX #44, Unicode Character Database. The changes listed there include character additions and property revisions to existing characters that will affect implementations. Some of the important impacts on implementations migrating from earlier versions of the standard are highlighted in Section M.
G. Changes in the Unicode Standard Annexes
In Version 17.0, some of the Unicode Standard Annexes have had significant revisions. The most important of these changes are listed below. For the full details of all changes, see the Modifications section of each UAX, linked directly from the following list of UAXes.
Unicode Standard Annex Changes UAX #9
Unicode Bidirectional AlgorithmNo significant changes in this version. UAX #11
East Asian WidthNo significant changes in this version. UAX #14
Unicode Line Breaking AlgorithmNo significant changes in this version. UAX #15
Unicode Normalization FormsNo significant changes in this version. UAX #24
Unicode Script PropertyNo significant changes in this version. UAX #29
Unicode Text SegmentationNo significant changes in this version. UAX #31
Unicode Identifiers and SyntaxNo significant changes in this version. UAX #34
Unicode Named Character SequencesNo significant changes in this version. UAX #38
Unicode Han Database (Unihan)No significant changes in this version. UAX #41
Common References for Unicode Standard AnnexesAll references were updated for Unicode 17.0. UAX #42
Unicode Character Database in XMLNew code point attributes, values, and patterns were added for Unicode 17.0. UAX #44
Unicode Character DatabaseThe documentation was updated to describe the changes to the UCD for Version 17.0. UAX #45
U-Source IdeographsNo significant changes in this version. UAX #50
Unicode Vertical Text LayoutNo significant changes in this version. UAX #53
Unicode Arabic Mark RenderingNo significant changes in this version. UAX #57
Unicode Egyptian Hieroglyph Database (Unikemet)No significant changes in this version. H. Changes in Synchronized Unicode Technical Standards
There are also significant revisions in the Unicode Technical Standards whose versions are synchronized with the Unicode Standard. The most important of these changes are listed below. For the full details of all changes, see the Modifications section of each UTS, linked directly from the following list of UTSes.
Unicode Technical Standard Changes UTS #10
Unicode Collation AlgorithmNo significant changes in this version. UTS #39
Unicode Security MechanismsNo significant changes in this version. UTS #46
Unicode IDNA Compatibility ProcessingNo significant changes in this version. UTS #51
Unicode EmojiNo significant changes in this version. I. List of Components
This section lists the components of Version 17.0.0 of the Unicode Standard. The version numbering and the role of each component are explained in Versions of The Unicode Standard.
M. Implications for Migration
There are a significant number of changes in Unicode 17.0 which may impact implementations upgrading to Version 17.0 from earlier versions of the standard. The most important of these are listed and explained here, to help focus on the issues most likely to cause unexpected trouble during upgrades.
Core Specification Changes
TBD
Script-related Changes
There are NN new scripts encoded in Unicode 17.0. Some of these scripts, such as xxx, have complex layout.
TBD
General Character Property Issues
- TBD
Normalization Behavior
TBD
Segmentation
TBD
Numeric Property Issues
TBD
CJK/Unihan Changes
- TBD
See UAX #38, Unicode Han Database (Unihan) for further details on these changes, especially TBD:
- TBD
Standardized Variation Sequences
- TBD
UTS #46 (IDNA) Changes
- TBD
Changes to Code Charts
- TBD
Collation-related Changes
TBD
Emoji Changes
For details about emoji changes, see the Unicode 17.0 emoji charts and Emoji Recently Added, v17.0.
 |