The folks at DarthHater have uncovered some pretty convincing evidence to support the claim that the Jedi Knight class will be next to be revealed, likely as this Friday's update.
Star Wars: The Old Republic community sleuths have discovered a number of images depicting the Jedi Knight class, and today, the Jedi Knight HoloNet animation has also been revealed. I'm willing to bet this is no mind trick!
Via DarthHater.