##Table D-1. Versions of Unicode and ISO/IEC 10646
Appendix D
Version History of the Standard
This appendix provides version history of the standard. Updates to data files are documented in Unicode Standard Annex #44, “Unicode Character Database.”
The Unicode Technical Committee updates the Unicode Standard to respond to the needs of implementers and users while maintaining consistency with ISO/IEC 10646. The relationship between these versions of Unicode and ISO/IEC 10646 is shown in Table D-1. For more detail on the relationship of Unicode and ISO/IEC 10646, see Appendix C, Relationship to ISO/IEC 10646.
| Year | Version | Published | ISO/IEC 10646 |
|---|---|---|---|
| 1991 | Unicode 1.0 | Vol. 1, Addison-Wesley | Basis for Committee Draft 2 of 10646-1 |
| 1992 | Unicode 1.0.1 | Vol. 1, 2, Addison-Wesley | Interim merger version |
| 1993 | Unicode 1.1 | UTR #4 | Matches 10646-1 |
| 1996 | Unicode 2.0 | Addison-Wesley | Matches 10646-1 plus amendments |
| 1998 | Unicode 2.1 | UTR #8 | Matches 10646-1 plus amendments |
| 2000 | Unicode 3.0 | Addison-Wesley | Matches 10646-1 second edition |
| 2001 | Unicode 3.1 | UAX #27 | Matches 10646-1 second edition plus two characters, 10646-2 first edition |
| 2002 | Unicode 3.2 | UAX #28 | Matches 10646-1 second edition plus amendment, 10646-2 first edition |
| 2003 | Unicode 4.0 | Addison-Wesley | Matches 10646:2003, third version |
| 2005 | Unicode 4.1 | Web publication | Matches 10646:2003, third version, plus Amd 1 |
| 2006 | Unicode 5.0 | Addison-Wesley (2007) | Matches 10646:2003, third version, plus Amd 1, Amd 2, and four characters from Amd 3 |
| 2008 | Unicode 5.1 | Web publication | Matches 10646:2003, third version, plus Amd 1 through Amd 4 |
| 2009 | Unicode 5.2 | Web publication | Matches 10646:2003, third version, plus Amd 1 through Amd 6 |
| 2010 | Unicode 6.0 | Web publication | Matches 10646:2011, second edition |
| 2012 | Unicode 6.1 | Web publication | Matches 10646:2012, third edition |
| 2012 | Unicode 6.2 | Web publication | Matches 10646:2012, third edition |
| 2013 | Unicode 6.3 | Web publication | Matches 10646:2012, third edition |
| 2014 | Unicode 7.0 | Web publication | Matches 10646:2012, third edition, plus Amd 1 and Amd 2 |
| 2015 | Unicode 8.0 | Web publication | Matches 10646:2014, fourth edition, plus Amd 1, and 51 characters from Amd 2 |
| 2016 | Unicode 9.0 | Web publication | Matches 10646:2014, fourth edition, plus Amd 1 and Amd 2, and 273 characters from 10646, fifth edition |
| 2017 | Unicode 10.0 | Web publication | Matches 10646:2017, fifth edition, plus 344 characters from Amd 1 |
| 2018 | Unicode 11.0 | Web publication | Matches 10646:2017, fifth edition, plus Amd 1, and 117 characters from Amd 2. |
| 2019 | Unicode 12.0 | Web publication | Matches 10646:2017, fifth edition, plus Amd 1 and Amd 2, and 62 characters from 10646, sixth edition |
| 2020 | Unicode 13.0 | Web publication | Matches 10646:2020, sixth edition |
| 2021 | Unicode 14.0 | Web publication | Adds 838 characters |
| 2022 | Unicode 15.0 | Web publication | Matches 10646:2020, sixth edition, plus Amd 1 |
| 2023 | Unicode 15.1 | Web publication | Adds 627 characters |
| 2024 | Unicode 16.0 | Web publication | Matches 10646:2020, sixth edition, plus Amd 1 and Amd 2 |