The isle is home to a horde of ravenous zombies and is the base of operations for two opposing queens. Their majesties Vyle and Neperta make their home on the fog-shrouded island, as do the denizens of 23 new dungeons ripe for the plucking by adventurers from across the realm. Oh yeah, that level cap, previously stuck on a piddling 51? It's been bumped to 55, the better for you to get a handle on some changes to cooldowns and the skill system whilst you're grinding your way through packs of monsters.
Today's Mythos press release also alludes to a massive crafting system overhaul, but since it's a little light on the details where tradeskilling is concerned, you'll just have to log in and see for yourself. Alternatively, you could hit up the official website for more details.