Unless there’s another version out there, the one I’ve seen is so fuzzy it’s hard to say if Palpy is in the flesh or not. The fakes of Kylo a year or so back at an unknown location looked better than this.
I think a lot of people here are refusing to see the obvious, and hoping for the moon. Both the trailer, and the leaked images of the last few days have confirmed many of the plot leaks, that have been going around for a while now. Palpatine is back in the flesh. He’s hooked up to some machine early in the film, as seen in the trailer, and foretold by the leaks months before the trailer was released:
A lot of people don’t want to believe Palpatine is back, because it doesn’t make much sense from the perspective of ROTJ, and I get it, but I think the nay sayers should be prepared for a dose of disappointment, and hope for a good explanation in the film for Palpatine’s return.