The writers and designers at Sony Online have the most incredible efficiency. They produce expansions, content, and additions to EverQuest II faster than horses produce shit. And thankfully Rise of Kunark is a first-rate addition to the world, and is value for money.
Newbies can start as the Sarnak, a new race taken from EverQuest: The Ruins of Kunark. This evil race starts in the midst of a war against some angry parrot-people, and has arguably one of the best learning curves I've seen in an MMO to date.
Rise of Kunark eases you into the game with so many quests and so few distractions that you'll forget the grind completely - and that's saying something.
Higher-level players can look forward to more of everything, as there's new content for level 65-80 players, who can now conquer a great deal of revamped Ruins content. Former EverQuest players can enjoy revisiting things they've seen in the original, and EQ2 players have a huge amount of new stuff to tear through.
This is highly recommended - it's essential for older players, and for those still on the fence over EverQuest II, now is probably the best time you've had to give it a go.