According to new information, the Samsung Galaxy Z Fold 4 will probably get support for the S-Pen, but it looks like this model will not be a direct sequel to the Galaxy Note.
As I said, it looks like you will get support for the S-Pen for the internal display, but it does not look like the model will get any compartment for the pen. But it is unclear whether you will be able to use the pen with the external display or not.
–