Cingular has posted a page that announces that the HP iPAQ hw6500 will soon be available for order. If you’re interested, you can sign up and Cingular will notify you when the unit is actually released.
It is unfortunate that HP has confirmed that the iPAQ hw6510 and hw6515 will not be upgradeable to Windows Mobile 5.0. I suspect that there will be a few lost sales as a result.