So far I've played a few of the new gametypes for big team.
CTF on Ragnarok: Exactly the same setup as regular CTF as far as i can tell. (no banshee

King of the hill on Exile: same as current BTB settings.
CTF on Long Bow: Neutral banshee on top of Bravo base. Spawns something like 1.5 minutes.
King of the Hill Long Bow: Same as current BTB settings with Banshee and tank at both bases.
Regicide on Complex: Same as current BTB settings.
Also, I haven't noticed any infinity settings at all.