Hi release team and Matthias,
the information from Matthias was correct, and Berkeley DB 6.0 has been released today, + packaged and uploaded to unstable.
db-defaults has been updated to 6.0 dependencies and uploaded to experimental.
I don't expect bigger problems with the transition since I think we went through the biggest hell when transitioning from db4.{7,8} to db5.1, but there might be still some packages which will need some patching to support major version bump (although I think I have provided patches for most of those when the bump from 4 to 5 happened).
We will just remove db5.3 from the archive when python-bsddb3 will transition from db5.3 to db6.0.
Regards,
Ondrej