The good news for players is that the merge, on a whole, went fairly smoothly. There was a slight extension of the expected operation time, which is really normal when dealing with a large-scale operation. It should also help the game's players enjoy the game with a larger population to draw from. The bad news is... well, a server merge is never exactly a comforting fact for any game, and we can only hope that the long-term benefits for Vanguard outweigh the negatives.
[Update: This does not affect the EU server which is set to merge at a later date. Thank you to everyone who tipped us on this!]