The leak said we're going to get Pokemon Stars reveal in January Switch reveal but that didnt happen

They also said the Pikipek model from the first trailer was for Switch version which is also wrong because its the 3DS one

Stars rumour goes down the drain

Of course its very likely - obvious even - GF is working on the next game but that doesnt mean its going to be a third verison or sequel of Alola. In fact judging by the lack of Z version it might be something completely different like DP remakes to surprise us instead of doing the same thing right away. Plus switching to a new console in the middle of generation just sounds like a stupid idea in general. Brand new gen will just sell a lot more than a third installment