I think maybe they're redesigning her. I wonder if they were influenced by the people complaining that they didn't like the female companions so they're scrambling to make her more appealing to those people. Or they realized she has a loyal fan base and they're adding more content to make her just as important as Leliana and Cullen. Just guessing
This late in the game, I doubt they're making any major changes to her personally or back story content wise. If anything I suspect it's mostly to do with little tweeks to her model/visual aesthetic than anything else. Or maybe the want to have her interview written up and ready to post before they put up her profile, or maybe it even has something to do with not wanting it to compete with the Q&A happening tomorrow.
My point is I doubt it's something major that it will take them several weeks to prepare.