If you look through the Trademarks they have going, the only Asian sounding name is Lia, and it seems far too modern to me.

I'd imagine that whoever Rebecca/Rebekah is, we'll see her first. I hope she's interesting. And since the name isn't easily pinpointed to some specific culture, (except, perhaps Rebekah, which could easily be Jewish), I hope she's an immigrant with brown hair. We haven't had a brunette Caucasian historical since the original set, with Molly and Samantha.

I definitely agree with Sara, though. There's a reason Jess was only half Asian. They wanted her to be quite different from a future (hopefully 100%) Asian they might make. I want an Asian historical more than anything, but I really think we wont be seeing one for at least a good few years. Friend dolls, and possibly Rebecca aside, they'll want to make sure there's enough time between Jess and any new Asian girl, so there will be new collectors who don't have Jess, to buy the new girl.