According to tipster Chun (@chunvn8888 on Twitter), the S Pen Pro features a 0.7mm tip, and it can sense 4,096 levels of pressure. Apparently, it can also be used with the Galaxy Z Fold 3 without damaging its foldable display. The special stylus is said to feature a USB Type-C port for charging. It can also be magnetically attached to some cases on the back of compatible Galaxy smartphones (similar to the Galaxy Tab S7's S Pen). It is being rumored that the S Pen Pro will be priced around £70 (most probably without the case) in the UK.
Samsung has already revealed that it has created a special S Pen for the Galaxy Z Fold 3. However, it is not clear as to how it would be different than the S Pen Pro. We should get more information about both upcoming styli on August 11, 2021, when the Galaxy Z Flip 3 and the Galaxy Z Fold 3 would be officially unveiled.
Since the South Korean firm has confirmed that it won't launch a new Galaxy Note device this year, if someone wants a brand new smartphone with S Pen compatibility, their best bet would be getting the Galaxy S21 Ultra or the Galaxy Z Fold 3 along with the option S Pen/S Pen Pro accessory.
