Skyfire project.

[WiePasta]

So is skyfire project the only ones that is active in getting a good cataclysm emu?

Have trinity/mangos given up and only focusing on fixing the minor bugs on WOTLK?

And if so why? dosint more players have cataclysm (because of retail) then have a copy of the old WOTLK on there PC

[myran2]

MaNGOS, as far as I know, isn't working on 4.x.x support. Publicly atleast.
TrinityCore has two branches for cata. One is a total rewrite from scratch in C# (Encore) and the other is Singularity. It seems like both are closed-source at the moment, but in the next few months, you should see something happening with at least one of them.
Wcell also has a 4.x.x branch that seems to be almost as far along as Skyfire.