They said in the official announcement that this won’t be Episodes X, XI, and XII.
Right, but I 100% guarantee you that Episodes X, XI, and XII are coming after Johnson’s trilogy is finished.
I doubt it. TROS is supposed to finish the Skywalker saga and I think the best follow-up to that would be to go back to the ancient Jedi, before they were the jaded Old Republic Jedi of the PT. It would be the best way to show what happens next while not revisiting the Skywalker saga. I think some classic Jedi from a thousand years before ANH would be awesome and give them a fresh start at the same time.