They have started testing Update 19 on Bullroarer. If you're interested in seeing what's coming or just want to try some things you can't afford on the real servers, you can download the Bullroarer client and check it out.
The Bullroarer server will be up from time to time as they test out the new content and other changes. To access it, you must download and install a separate LOTRO client. You can switch back and forth between the Bullroarer client and the regular client, but an account can be logged on to only one server at a time (either Bullroarer or one of the real servers). You can copy one or more characters to Bullroarer using the transfer feature. What you do on Bullroarer does not affect the real servers, and there's no way to get anything back from it. On Bullroarer you can get lots of gold, TP and MC to spend, as well as other tokens and barter currency. There are ways to instantly level-up new characters.
The Bullroarer forum https://www.lotro.com/forums/forumdisplay.php?787-Bullroarer-(Public-Test-Server) has a lot of information, although it's not always easy to find.
The download links are here: https://www.lotro.com/forums/showthread.php?571061-Bullroarer-client-Installer-DOWNLOAD-LINKS Note that if you have installed it before, you should not need to download it all again. If you start the Bullroarer client, it should update to the current beta version just like the normal client does.
Here are some details: https://www.lotro.com/forums/showthread.php?646926-Bullroarer-Update-19-Preview-and-Release-Notes
There is a new Premium housing area (including Kin houses) at the Cape of Belfalas. By "Premium", they mean the house is purchased and upkeep is paid in Mithril Coins (VIPs get free upkeep). These are in addition to the one house per account you currently can have.
There are new areas with new quests.
More things may be added in future betas. They expect to go live in October.
NOTE: They did not wipe the data since Bullroarer was last up for Update 18. If you copied your character then, you won't be able to copy it again. Log on to Bullroarer to see what characters are there before trying to copy your character.