Its a bit more expensive (only about 8%) and can be ordered from today:
powertronicecu.com
I have not checked if the R-Tune software has changed too - will update on that once I receive my new PT.

PowerTRONIC Royal Enfield Himalayan Without Choke (2021-2022) - PowerTRONIC
PowerTRONIC Performance ECU for Royal Enfield Himalayan Fuel + ignition control improves the over all performance of the motorcycle

I have not checked if the R-Tune software has changed too - will update on that once I receive my new PT.