This section provides a list of major releases of the Unicode standard and their publishing dates.
Since its first release in 1991, Unicode standard has gone through a number releases,
Here is a list Unicode major releases.
Unicode 1.0.0 - Published in October, 1991 as a book called "The Unicode Standard, Version 1.0" (ISBN 0-201-56788-1).
Unicode 1.1.0 - Published in June, 1993 as two proposals. Unicode 1.1.0 is compatible
with the international standard, ISO/IEC 10646 - Universal Multiple-Octet Coded Character Set (UCS).
Unicode 2.0.0 - Published in July, 1996 as a book called "The Unicode Standard, Version 2.0" (ISBN 0-201-48345-9).
Unicode 2.1.0 - Published in 1998 as a technical report which fixed a number of errors, added the U+20AC EURO SIGN
for the new European currency, and so on.
Unicode 3.0.0 - Published in September, 1999 as a book called "The Unicode Standard, Version 3.0" (ISBN 0-201-61633-5).
Unicode 3.0 contains 49,194 characters from the world's scripts.
Unicode 3.1.0 - Published in March, 2001 as technical report which added 44,946 new characters and extended code point
value beyond the original 2-byte boundary. New characters are added with code points in U+10000...U+2FFFF and
U+E0000...U+EFFFF ranges.
Unicode 3.2.0 - Published in March, 2002 as technical report which added 1,016 new characters in
the Basic Multilingual Plane (BMP), U+0000...U+FFFF.
Unicode 4.0.0 - Published in April, 2003 as a book called "The Unicode Standard, Version 4.0" (ISBN 0-321-18578-1).
Unicode 4.0 contains 96,382 characters from the world's scripts.
Unicode 4.1.0 - Published in March, 2005 as technical report which added 1,273 new characters.
Unicode 5.0.0 - Published in July, 2006 as a book called "The Unicode Standard, Version 5.0" (ISBN 0-321-48091-0).
Unicode 5.0 contains 99,024 characters from the world's scripts.
Unicode 5.1.0 - Published in April, 2008 as technical report which added 1,624 new characters.
