@Erpe, he did tell us that TS4 will be EAs main Sims game for years longer. That is what all those tweets add up to.
As for what he's doing on Twitter, it is almost entirely answering Seasons questions and talking to Simmers about desired future Sims 4 content. It's all there - you're welcome to read it yourself. There are also fun conversations about great world cities and how pineapple really does belong on pizza.
As for TS5 "under a different name", why wouldn't that mythical creature actually be the mobile Sims game they already just released recently? How would you know it's not actually your "TS5"? TS5 could be right under your nose this whole time. ;)
