Archeage or Wildstar are the only two current offerings that do anything sort of new. The whole genre is stagnated and hemorrhaging(exaggeration) players right now. There are roughly 100 million unique MMO gamers in the world, with 40 million being very active. Most are playing free to play games and almost half are non-english speaking. Those are industry numbers from a conference I attended in Korea a couple of months ago.
Wildstar is incredibly well polished and is fun. well written and beautiful. Archeage is more free-form and PVP focused. Both are good steps forward, but are not leaps forward. Don't expect any sort of groundbreaking new MMO experience. The costs are too high to take big risks. Good luck and I hope you find what you are looking for.
There are also new types of games like Trove(<3) and Landmark that take the Minecraft experience and push it to an MMORPG. Then there is the excellent Planet Explorers indie game that offers an MMORPG game experience to singleplayers. It's a fantastic game if you like MMORPG quests, levelling and crafting but don't actually care about playing with others.
Finally, there are the MMO-FPS options. Rust, 7 Days to Die(my fav), Nether and the upcoming The Final Stand(I am a consultant/stakeholder on this one). These games are played on a variety of low(er) population servers, public and private and involve PVE, co-op, PVP, crafting and persistent worlds with social interaction. It's much more dynamic than MMORPGs and the industry is betting it will replace the MMORPG.