Hello!
-does AI have vision of players in fog of war? if no, does it use wards?
Our goal is to make bots that have no cheats or active advantages that players do not have access to, so they do not currently have vision in Fog of War that a player would not have access to. For Bots using wards, that is on our radar and something we know is accomplishable, but will be in later down the line after we get more of the core tech and more impactful feature sets for new players.
-do champions controlled by bots get additional buffs (like in boom bots) or they are normal champions?
Normal champions for this mode! As our goal is to help new players (and low ranked players) learn League, and enable easier bot creation in the future, our focus is more on making a structurally sound bot system that can help new players learn core mechanics and strategies :)
-do AI controlled champions get just earned gold (from CS and kills) or they get bonus gold compared to player?
Similar to above, bots will not gain additional gold for the standard co-op versus AI experience. (Obviously, if we have a game mode that comes out, it could be a different answer ;)
-can AI roam or gank?
That is our goal! We are working on that bit now and hopefully will be able to show it during the 2 week on tech test, so please get a PBE account and try it out so that when we iterate and improve it, we get good feedback! Even though our target now is more New Players atm, we want to know what matters to higher-skill, and longer-term players.