All the Microsoft TrueType fonts are Unicode, and the repertoires that each of them cover are added to over time. (usually in small groups of characters in order to fully support regions such as the former soviet republics, etc.)
If you are referring specifically to Arial Unicode MS, the current version is 1.0 (as opposed to various 0.8x and 0.9 versions in the past). This version 1.0 has added OpenType shaping tables for many Indic scripts, as well as a few more characters, but its basic repertoire is still Unicode 2.1.
There are fonts available for download from Microsoft that cover much of CJK Ext A and Ext B that were added in Unicode 3.0 and 3.1. Various other fonts exist that support additional scripts added in 3.0.
Please note that my personal recommendation is to use specific fonts appropriate for the scripts you are supporting, rather than relying on a "universal" font, which is always going to be compromised typographically.
Chris
-----Original Message-----
From: akerbeltz.alba [mailto:akerbeltz.alba@virgin.net]
Sent: Wednesday, October 17, 2001 3:33 PM
To: Unicode
Subject: Windows/Office XP question
Have the unicode fonts for Win/Office XP been extended, especially the
ArialUnicode one (perhaps to include all of 3.0) or are they the same as in
ME/2000?
Měcheal
This archive was generated by hypermail 2.1.2 : Thu Oct 18 2001 - 01:41:36 EDT