This hotfix deals with a severe map cycle bug and also adds team balance to new 'Teamplay' mode.
Regarding 'Teamplay' mode, there seems to be a crash related issue which only affects Linux servers. So if you host it on Windows based server then it should be ok. As a reminder:
If you want to start a teamplay mode server, just set 'fof_sv_currentmode' to 2 in server.cfg (note that this cvar already exists, just change it). Your starting map should be tp_riobravo, as this is the only one included in this update.