Here's a screenshot of the new game screen. It will have up to 12 players. If you're playing a local game, you can select either human, computer, or none for each player. Having more than 1 human controlled race will allow for hotseat multiplayer.
I'm still working on the layout, but implementing this showed a very big bug. The dropdown menu that is drawn before the next one, but overlays it, will be drawn underneath the next one. You can see this in action in the screenshot, at second to last player.