You have asked for it. We have always listened. Even though almost all the components are needed to be replaced, it will be possible to upgrade from MK2/S to MK3S. If you don't need a full MK3S upgrade, you can use our upgrade to MK2.5S. It offers most of the important new features of MK3S and is significantly cheaper.
Upgrade kit for the Original Prusa i3 MK3 to Original Prusa i3 MK3S. With this upgrade we are introducing a completely reworked extruder with a new filament sensor. ALL MMU2 OWNERS WILL GET THIS UPGRADE FOR FREE AS A PART OF MMU2S UPGRADE. More info: Article at prusaprinters.org