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They posted a blog on the official site about how they're changing things with the upcoming expansion.
Mostly it seems that the Flashpoints and Ops (to a lesser degree) will now scale to your level, and reward class specific loot.
The ones that are important to the story are also getting a solo mode. The Boarding Party, the Foundry, Maelstrom Prison and Taral V are the first that come to mind for me when I read that. Which is a good thing, since this way you can enjoy the story at your own pace the first time around without those who are there for the loot getting impatient.
All current Ops are also getting bumped to the level cap, so if you want to farm them for something specific before they turn "hard" again, now's the time to do it!