I know it's kind of a packed market at the moment. Some people are still playing WoW/Old Republic. There are like ten MMOs coming out this year, and even more hybrid shooter/MMOs and deep RPGs. As someone who has very little time for MMOs these days, I still find myself trying them out.
Tera seems pretty unique. Aside from being gorgeous and running extremely well (it's been out for a bit in Korea), it has some neat concepts that might make it stand out from the WoW / Rift formula. The combat is more involved and plays more like a character action game than a standard MMO. There is no auto targeting or cycling targets. Your attacks hit whatever they actually hit. There are no dice rolls going on here. There's also a solid guild and government system where they battle for control and install governors over land which dictate things like taxes.
It hits open beta this weekend, and comes out formally on May 1st (characters will transfer over). I'm trying to see how many Giant Bomb members are considering picking it up. I'll be playing it, and was wondering if we'll have enough people to form a guild.
If anyone wants to join up, my character is on the PvP server "Jagged Coast".