How does that site know Maxis Austin is working on a brand new IP and a new generation of The Sims? Evidence, please, since we know Maxis hasn't made any announcements concerning TS5 or even any new IP of a different flavor.
ETA: The description of the so called new IP they list doesn't even make sense. Co-op players versus Environment events? what? We know EA wants to use environment events in many of their new games because of their S.E.E.D. technology or whatever it is called, but co-op vs environment events in a game doesn't compute. A group of players vs environment events while playing together and or a group of players playing a game/compared to one player dealing with environment events? I don't understand the description of what the game is supposed to be.