Samsung’s Galaxy Fold 4 is rumoured to be the first foldable with a dedicated S Pen holster. This leak seems more credible with the S Pen now in mass production in several Eurasian countries.
— Mukul Sharma (@stufflistings) April 18, 2022
However, it’s unclear if this is a new S Pen that is compatible with other Samsung devices. The Fold 3 only supports the S Pen Fold Edition and the S Pen Pro. This S Pen features different frequencies that make it compatible with the Fold 3. Additionally, using the S Pen on other devices can potentially damage the foldable screen.
However, with news of Samsung developing a new type of Ultra-Thin Glass, the screen might be strong enough to work with other S Pens like the one available with the S22 Ultra.
The Fold 4 might launch sometime in August.