King Jareth, could you edit this in your original post (trying to keep 1 thread on the updates here):
All unlock conditions are decreased by 80% (i.e. original value divided by 5) except for the B17, "because it's special aircraft for community and we want to stay this aircraft as symbol of MP achievements." The conditions for the B17 have been decreased, but not by as much.
There have been no changes to the types of unlocks, so most unlocks remain MP-only.
(all taken from
the original post on the dev's forum.)