The servers haven't been merged yet. It was delayed at first from mid march to when the big update was going to happen (sometime in april) and now the big update was pushed back due to the giant earthquake that recently hit japan. Not exactly sure when it's going to happen (sometime in may now), but it will happen...
And yeah I still play. I'm currently in a shell with a few friends since apparently that's all that's necessary to get anything done in abyssea (whm, nin, thf, blm can kill anything in there and more often than not get !!procs/drops). Not looking forward to the merge... I'll likely still have my name on bahamut though a number of friends will lose theirs.
If you haven't taken a look at future changes in store, check out: http://forum.square-enix.com/ffxi/threads/4937-The-FINAL-FANTASY-XI-roadmap-for-the-twelve-month-period-commencing-April-2011
They've got quite a lot lined up for us. Edited, Apr 10th 2011 10:22am by orinthia