Larian Studios has released a new Kickstarter update video regarding Divinity: Original Sin 2 today, and in it there has been confirmation that the game will feature both local split-screen multiplayer. There was also confirmation that the game would have controller support on PC. Additionally other in game features were confirmed including Skill and Rune crafting, as well as Ghost Talking. The latter allows players to commune with the spirits of characters killed.
Source: Press Release