It sounds like it will be all about Sims 4, but who knows. Personally I don’t expect Sims 5 at this point, but I will be pleasantly surprised if something about new game was included.
For now it seems they are preparing some big changes for Sims 4 specifically. Could be new type of dlc or maybe graphic overhaul, who knows. I know that many players sort of wish for Sims 5 because they are either disappointed with 4 or just want to have something new to talk about. But imo Sims 5 at this point won’t earn as much money as Sims 4 which has many dlc with highly requested content. Sims 5 will need years to get to the point of having so many ad ons. If they ever launch it, it will be probably along Sims 4 so it can mature and slowly get new content while most players will still enjoy Sims 4. Personally I don’t think that moment is now, but I could be wrong. ?