The 3rd RC of UP 3.0 has been released (approx 190Mb)
This means that many servers which have been running 2.1 up to now soon will upgrade to UP3.0RC3, ecpecially since the CRT=2 issues has been solved.
About Warbirds of Prey Servers
According to RAF238thWildWillie over at WPS, they will be running their test server with this update for the next several hours and will finally upgrade Spits Mods and most probably Zeke's as well late Friday evening (that would mean Saturday for us Euros).
EDIT: Both servers now updated to UP3.0RC3
More about their update here, and also installation instructions.
PLEASE BE ADVISED: Disable any activated addons with JSGME before you install the RC pack and then apply them again.