The Ultrapack lead developer "Hades" has left IL-2 long time ago.
We've taken over further development of UP3 at SAS, you can find the dedicated board here:
http://www.sas1946.com/main/index.php/board,186.0.html
So far we've nailed out lots of old bugs from UP3RC4 and released a "Patch Pack" which includes all fixes plus a set of new features, e.g. Control Surface and Pilot Head movement replication in online sessions and, probably most notably, the integration of IL-2 4.13's AI code in UP3.
We're also hosting a UP3 server on hyperlobby which is usually populated around the european evening hours and sees big action every sunday 3PM GMT for about 4 hours at least when the "Flying Ass Clowns" hold their sunday session on this server, with a little luck the "Chuffy's Flying Circus" meets on the same server right after that.
Subforum for the UP3 Server can be found here:
http://www.sas1946.com/main/index.php/board,237.0.html
Stats are available here:
http://www.sas1946.rocks/up3test/
UP3 isn't dead, don't worry.
The "long term" plan is to put totgether something like "UP4", but this will take a while.
Best regards - Mike