The Galaxy Fold 4 has been announced, price has dropped for the 512GB model compared to the Fold 3 and there's now a 1TB model. It's more of an incremental upgrade compared to the jump from the Fold 2 to the Fold 3.
Changes:
A tiny bit wider - 23.1:9 vs the Fold 3's 24:9 on the front, 6:5 vs 5:4 on the inside display
New subpixel matrix scheme that's meant to look sharper
More hidden under-display camera
Android 12L
Larger camera sensor vs the Fold 3
Higher-res main sensor (50MP) vs the Fold 3's 12MP
3x optical zoom vs 2x
Snapdragon 8+ Gen 1
Slightly lower weight (263 vs 271g)
45% stronger ultra-thin glass screen
Stronger adhesive on preinstalled screen protector
I ordered this slim aramid case from Aliexpress on the 12th of Aug, it arrived today. Just in time for the phone!
I also ordered this tempered glass screen protector. I have the Fold 3 version from the same seller and am very satisfied with it. It fits within the front cover frame and raises the screen so it's almost flush with the case.