SOE has to announced through their facebook page that they will be adding more servers to meet the demands of European players who received the game this week.
Here's the statement released by Sony Online Entertainment:
"Creating DC Universe Online has been a massive undertaking, and we're excited to be that much closer to launch," said Christopher Cao, Game Director of DCUO for Sony Online Entertainment. "We're grateful to our beta players for providing us invaluable feedback in these final stages that has enabled us to put the finishing touches on a fun and exciting experience when the game launches in January."