Just ordered my wife's now, I bought a black one for her for her birthday. Her line qualifies for an upgrade anyway. When the white one is out I will add a line and purchase one of those and do a swap, my Mom will take my 32GB 3GS. The wife's phone says ships by July 2. I bet some are shipped earlier as apple get's some in stock. If not no big deal, we can wait.
We will most likely keep the 3G as a backup incase my Mom breaks the 3GS.