Zach Epstein:

AT&T is now showing two versions of Apple’s unicorn-colored iPhone. The entries appear in AT&T’s Online Account Management system (OLAM), and read as “iPhone 4 – 16GB White” and “iPhone 4 – 32GB White.” While the carrier’s online account tool obviously wouldn’t include any indication as far as when we might expect white iPhone 4 models to hit the store shelves, it’s looking like late February or early March at this point.

I don’t know why anyone would purchase an iPhone 3-4 months before the next model is going to be announced. The white model shouldn’t be released this late in the iPhone 4’s lifespan.