Hexagon from Ritualistic sends word of a new version 1.06 patch for Sin. Here is a local copy of the 1.04-1.06 patch (2.2 MB), which can also be used to updated version 1.05, and a local copy of the 1.01-1.06 Patch (11.5 MB). Here is Ritualistic's page for users of version 1.04 patch, and their page with a patch for users of version 1.01 Here's the deal on the patch, which includes a new map, as well as text-to-voice synthesis:

Version 1.06 includes:
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- New Map "Spool". Spool is a 2-5 player deathmatch map created by Zor.
- 3DNOW! code bugs/crashes have been fixed
- Savegames have been fixed
- a deathmatch-only "auto switch weapons" flag has been added. Turning this flag off will make it so that players don't automatically switch weapons when running over a new weapon.
- there is now a new messagemode for talking, messagemode3. This mode can also be accessed from typing, "say_talk".

say_talk [pitch] text

pitch - is optional, with 1 being normal, 2 being twice as high as normal and 0.5 being half as normal.

text - What ever you type will be phonetically translated and synthesized.