What's The New Sims 4 Experience?

I am guessing it is a sp and announcement of extending Sims 4. I do not believe many of those things listed are even possible in the Sims 4 between the design of this game and the important elements to create those things being missing in the game engine and basegame - none of which could be just patched in. The game would need a total remake from ground up to empliment many of those things on the list and probably a different engine design on top of that.