Very short description of this medieval fantasy would be "Game of Thrones Meets EVE Online", another quick intro is it's IGN Wiki ( http://www.ign.com/wikis/crowfall) or you can check the official site - https://crowfall.com/
It was Kickstarted in March 2015 and already counts 150 000+ accounts and well over $10M of budget. The game is in early access, and should launch in 2017. Be warned thou - it's mostly a PvP game, and will not be too casual friendly. In my opinion, EVE Online should be a good orientation of what to expect in long term gameplay.
Couple more quick facts - there will be procedural terrain generation (used by players to build their kingdoms at will), building and voxel destruction - very much connected to sieges - and server rulesets will vary from "soft" classic RvR (Elder Scrolls Online, Dark Age of Camelot, Warhammer Online, Guild Wars 2...) to free for all / friendly fire and full corpse loot.
Account is tied to crow-spirit, and NOT player's body - this should lead to frequent changes of sex/class/race ( say, check this short comic - http://imgur.com/a/jbuKL) Access to current tests is kinda expensive, but there will be open beta (free tests) in "summer 2017"!?