Scheduled Server Downtime: 8:00 AM - 12:00 PM Eastern (-4 GMT) Wednesday, April 28th
UPDATE: The game worlds have reopened.
The LOTRO game worlds will be unavailable on Wednesday, April 28th from 8:00 AM - 12:00 PM Eastern (-4 GMT) to release Update 29.5.1. The Release Notes can be found on LOTRO.com, but there is just one public note:
Monster Players can now use their Steel Tokens to receive anniversary rewards by speaking to Thrak near the entrance to Gramsfoot.