On the Official Forums today Cordovan announced that U19.2 will be released on Monday.

Downtime Noice: 8:30 AM – 2:00 PM Eastern (-5 GMT) Monday, December 19th

The LOTRO Game Servers will be brought down on Monday, December 19th from 8:30 AM – 2:00 PM Eastern (-5 GMT) for an update to the game. Thanks for your patience, and we’ll see you back in the game soon!

From the Bullroarer server there are release notes and feedback: https://www.lotro.com/forums/showthread.php?649373-Bullroarer-Update-19-2-Preview-and-Release-Notes