4.6.1 Firmware
4.6.1 firmware is released. It does seem to be a little faster with the WIFI transfers (though I still often get errors at the end from Prusaslicer, or from Prusalink at 100%, where the file actually transferred). There also might be a bug where if you do not clear the previous print from the screen on the printer, you can't send a new job. I guess this could just be a safety measure but you should be able to override from remote if you confirm the bed has been cleared. Have to experiment with that a bit more. Also unless it's me, it seems like the "absorbing heat" cycle is even longer, something like 8 minutes. Not sure what the reason for that is, if intentional.
RE: 4.6.1 Firmware
I just did the firmware upgrade to 4.6.1 on my MK4. In Octoprint everything looks the same as with the previous version. I have created a serial.log in Octoprint about the connect and a short print job in case somebody wants to check if there are more commands supported now.