See the full changelog below:

• Fixed problems with savegames on linux 
• Improved support for 21:9 resolutions
• No more "Connection to server lost" in singleplayer
• Fixed problem that would detect pretty much every attached device as controller and would switch to controller scheme too quickly
• Pentagram now shows its work status even when the unit is away to get gold/be admired
  a.k.a "Unit does not leave the pentagram anymore even when it requires gold/admiration"
• Fixed a bug that made "improved training" work exactly the opposite of what it should do (meaning training a unit would take double as long instead of half as long)
• Implemented periodic auto-saves
• Fixed a bug that would make a host stuck in an infinite loading screen when the connection to other players was lost
• Fixed a bug in connection with the "apply" button in options menu
• Quick game now launches a domination match, not a deathmatch
• Improved Overworld render performance for OpenGL and DirectX, increased performance for Linux and Mac (most probably for a lot of Windows folks as well)