This patch is comprehensive and intended to be the ONLY *necessary* install other than TA and the expansions. The patch will be REQUIRED by future versions of mods such as TA Escalation and TA Zero. Further updates (4.1, etc.) are also planned which will add even more new features which are under development.
The v3.9.xx series of beta patches will be released for testing and refinement purposes on the TAUniverse forum, leading up to the final v4.0 patch which is intended for mainstream use by all players. This is a patch, NOT a mod, and does not change the game balancing in any way it only adds new features and fixes technical issues. This is a beta version of the upcoming TA v4.0 Patch which is a comprehensive update to Total Annihilation intended to replace v3.1 as the de-facto version of the game as well as make all old custom enhancements obsolete. Total Annihilation v3.9.01 Beta Patch (April 15, 2012)