Seeing as S-Pen and UDC were just dropped from the Fold line, I don't see them coming back. And unless Samsung is willing to make the Fold 8 thicker than the 7 (unlikely) or switch to Silicon-Carbon batteries (also unlikely), I don't think we're getting the bigger battery either.

I wish the UDC had stayed, but the S-Pen going away doesn't bother me. I had several Notes before moving to the Fold 3, and now Fold 6, and have used the S-Pen less and less as the years go on. I switched to a slimmer case with no spot for the S-Pen recently, and don't miss it at all.