When starting a new game in the latest build, under number of opponents, the only options are Random, 1, and 5. All of the other options are greyed out. This wasn't mentioned in the notes so I wasn't sure if it was intentional. Also, whenever I tried to play a game with 5 opponents, the game would crash, regardless of map size.

EDIT: Adding on to this, whenever I select Random, it seems to always put 2 opponents, so I'll just try using that to play with all the available factions for now.