No, it's not in trouble. Will some players playing now eventually quit? Yes. That's the nature of MMOs. New players will come to replace them. We can see from all the sprouts around for the XBox beta that interest in the game is still alive and well. The game has changed over 10 years and it will change again and some may need to make the choice to leave and find something more suitable. That's also the nature of MMOs.

If you want to see a truly dead game, go pop your head into EverQuest or EverQuest II. Yeah, they're both still getting expansions, but there's not a lot of new blood flowing through.