What if Raz is mad about all the server crashes the patch would cause if it were released? The topic about the patch maps also said something about opening registration.
With all those maps, the server has more burden on it. The reason registration isn't open all the time is that it made the server lag. With more maps and open registration, the server might crash more often after the patch. My guess is Raz doesn't want to del with the server crashing.