Are we correct in assuming a mass rebuild is required?

Not specific to releng, but do we know what will happen if we try to ship a new release using the updated rpm format and a customer/user picks that up to upgrade a release using the old rpm format? Will the conflict between the old/new formats cause any issues during dnf-system-upgrade or any other method of update?

@mohanboddu mass rebuild is required for https://fedoraproject.org/wiki/Changes/ParallelInstallableDebuginfo and https://fedoraproject.org/wiki/Changes/SubpackageAndSourceDebuginfo. All patches are already backported.

So we don't need new version of RPM for mass-rebuild.

there might be some file conflicts due to debuginfo packaging changes, but it is unlikely (and if there are, those are bugs which RPM needs to fix).

Btw, thanks for good question ;)