The shuffle began early yesterday morning at 09:00 UTC and was planned to be completed by 15:00 UTC the same day. Unfortunately, the transition to a new locale has had some unforeseen side-effects for Tranquility. After a long day of server work, final testing of the cluster revealed database issues that must be corrected before the game can go live. At 03:00 UTC this morning, the estimate for restoring Tranquility and the EVE website was mid-day today. With that time having now passed, CCP has released a new estimate of 16:00 UTC. If necessary, further delays will be announced on the official EVE Facebook page, the CCP Games Twitter page and the game's main website.
UPDATE: The server is now up and players can log in again. CCP has explained the reasons behind the long downtime and detailed their plans to reimburse players with skillpoints in a news post.