Most likely Sims 4 will be dropped by EA as soon as Sims 5 gets a trailer. You will continue to be able to play it, unless they break it before then. >:) Not saying they will, but you know EA. Then there will be no more official Maxis content, and no more bug fixes. No more patches. Nothing.
It was the same way for Sims 1-3. I doubt they will change things up now.
My advice to anyone, is to wait before adding new content to the game. Wait for the first glitch reports, because if it is the last expansion, you may have to live with those glitches for the next 10+ years.
