This kernel uses a different page size (4K) than the ones before (64K).
Still it just installs when upgrading via apt, rather than the new 64K
kernel package.

I think, users should have gotten the 64K page size kernel on upgrade.
Changing the page size is a quite disruptive change:

I installed Debian on a ppc64 machine less than a year ago. Back then,
for btrfs, apparently the default was to use a sector size that matches
the system page size. And btrfs can only handle sector sizes of 4K and
the system page size. So for anyone with a btrfs root filesystem, the
system won't boot with the new kernel.

Philipp

Hi

Yes, this change is expected.  It is documented in the NEWS file of the
package and should be showed to the user via apt-listchanges.

We decided to make this change, even if some systems will fail, to align
Debian better to a general purpose use case.

Bastian

Hi

Yes, this change is expected.  It is documented in the NEWS file of the
package and should be showed to the user via apt-listchanges.

We decided to make this change, even if some systems will fail, to align
Debian better to a general purpose use case.

Bastian