I'm mildly surprised that there isn't already a thread about this.
Wildstar, an upcoming MMO, entered Open Beta today. It's a classic (Everquest/WoW-style) MMO, with an action twist. It's being produced by Carbine Studios (a new outfit, founded by 17 disgruntled ex-Blizzard employees), and published by NCSoft.
Wildstar takes place on a newly-discovered planet, Nexus, and both the Dominion (a totalitarian regime run by an Emperor) and the Exiles (a rag-tag collection of rebels, misfits, and outcasts) intend to make use of the planet.
It was originally announced with the following video back in 2011:
...and has been in development since then.
There's too much information for me to go over it right now; the Beta is only open for the next 10 days. You can get more information on it here: http://wildstar-online.com/en/openbeta/
and check it out for yourself. =^_^=