Darn.

715   + Oct 27 Debian Installe (0,5K) nbd_2.8.7-2_powerpc.changes REJECTED
[...]
717     Oct 28 Debian testing  (0,3K) nbd 1:2.8.7-1 MIGRATED to testing

Apparently I had done something wrong with the uploa of 2.8.7-2, so it didn't get in. And 2.8.7-1 migrated instead, which it shouldn't have.

Oh well, fixed upload is on its way now; and it's not that important, either.