This Developer update looks at the new operation coming in 1.4 Terror from Beyond:
"The final encounter in Terror from Beyond pits players against a creature of unprecedented scale in Star Wars™: The Old Republic™. It’s easily the most visually striking encounter we’ve ever built. In Explosive Conflict, we took a gauntlet-style approach to the final boss, which worked very well in the context of a military operation. This is totally different. You get to fight something that is huge and otherworldly. The difficulty is highly execution-based, and the mechanics are very positional and fun."