SWTOR has announced it's latest expansion, Legacy of the Sith, coming at the end of the year. It also kicks off the 10th anniversary celebrations of the MMO, which seems to be mostly flying under the radar these days.
Legacy of the Sith has the standard SWTOR expansion features: a new planet, some new instances, 5 new levels, and a new raid or operation.
However, the big announcement is that Bioware has managed to separate mechanical classes from stories. Apparently starting from Legacy of the Sith, you will first pick a story, and then pick a class to use. The classes are separated into Force and Tech, but you can use any Force class for any Force story.
So for example, you could play the Jedi Knight story with the Inquisitor theming and mechanics. I imagine it will make more sense with the Tech classes. For example, a Sniper in the Republic Trooper story does seem reasonable.
Bioware has also been vague about this, but they're hinting that you can switch classes on one character. Maybe you can take your Sniper and switch to Commando. Shades of FFXIV's character and class situation. This isn't confirmed yet, but it's certainly possible. All the work that went into separating out class and story might have been enough to make switching classes easy from a technical perspective.
Finally, the other interesting possibility is that Bioware can now introduce new mechanical classes. Before, any new class would require a new 1-50 class story, with all the requisite cutscenes and voice acting. But now a new class could just attach to the existing stories.
In any case, it looks interesting, so we'll see what future reveals bring.