My 2 cents coming from S26U on the Fold8 & Fold8 Ultra.
I went to a local Best Buy to check out all the new products. I really wanted to like the Fold8 but with having the S26U I just can't. I did a side-by-side camera test with the Fold8 and the Fold8 Ultra and I'm sorry those zoom pictures are straight Ass with anything more than a 3x zoom. Unless Samsung updates the Cameras on the Fold9 I'll be staying with the slab phones.
Other than the screens being larger the Fold8 and Fold8 Ultra is a downgrade in every way compared to the S26U.
-Slower charging speeds
-Fold8 has small battery, same on the 8 Ultra
-No privacy Display