From Thursday, March 15 at 12:01AM CT through Monday, March 19 at 2:00AM CT you’ll be able to try the MMO for free.
There’s some limitations with the free trial such as a level 15 cap. If you can get a friend to invite you, you’ll be able to get a 7 day free trial, which would be better. This is only a 4 day trial.
Keep in mind the file size is huge.