If Batgirl's history wasn't erased, then does that mean Power-Girl's won't. And also, if she won't get her solo title, won't she stay the same?

They are saying that Karen Starr will still be around and will appear in one of the 52 titles. Still know word on if she will be Power Girl or not. Im thinking that she will have a new origin.

issue 25 had a weird clue that made it pretty clear she was going to return

The question is that...will she still be kryptonion?

She was in New York anyway which means she was kinda outside continuity to begin with?

She might still be E2, but she might not be Power-Girl.

I wonder if after a few of these relaunch titles fail, and some certainly are going to, will they put out a PG title. I wonder if its time though she becomes Power Woman. Also I hope they don't abandon the Karen Star persona and Starrware, I think that good character development for her and another avenue for  future stories to develop.

There's some speculation she's the mystery woman in the leaked Justice League pic, right under Hawkman.  I personally don't think so, but it seems a very minor possibility.  In any event, I hope not.  As one of 15 cast members, guess who'd get the short end of the stick when it comes to panel time and big moments...