This release is raspiBackup v0.6.7 with NVMe support included.
Note: It's not officially published given the number of users as of now is only one. Next official release of raspiBackup will base on this release. Thank you very much to the donator of a full blown CM4 with NVMe storage which allowed me to add and test the CM4 support.
If you want to use this release visit this page and follow the instructions.