"If you want to use PrusaLink with the full-sized RPi 3 / 4 over USB, use another printer type or just crave for more info, visit the Prusa Connect and PrusaLink explained article." I find this part very confusing. It sounds like I should use another printer type if I want to use PrusaLink with the full-sized RPi 3 / 4 over USB. I think that a comma here: "printer type, or just crave" would make it a bit clearer.
MMU2s works in version 7.0RC2, although cancelling print does some wacky stuff with the filaments, so your need abit of work post that (unloading the filment etc...)
Hi! There is no estimate as of now - but there are plans to incorporate the upcoming version of the MMU into PrusaLink.
Hi! Yes, you can use even the bigger versions of the RPi and connect it either using the GPIO pins or the USB. Unfortunately, there is no guide so far on using the bigger RPis.