So far the TFQv4.01 Patch will address:
The Load/Save Game crash issue:
it will only crash the first time you try to load the quicksave after that the quicksave and all saves should work fine.
Adds the missing CTF Flags:
(my bad I forgot these in the v4 release.)
Client Obituary Messages Fix:
Grammatical errors in the client 'death messages' for neutral gender types have been fixed.
Merged Quake2 3.23 fixes:
added the fixes from the unofficial 3.23 quake2 release, these include fixes for newer systems.