CompUSA already sells the new HP h6315 iPAQ Pocket PC Wireless Phone for $599.99.
CompUSA takes orders online, but buyers need to pick it up in the store (pick-up only).

On HP.com, when ordering the h6315 it says shipping takes 2-3weeks. The official release of the new HP Pocket PC Phone is in September.

The HP iPAQ Pocket PC h6315 with service from T-Mobile is featuring GSM/GPRS, Wi-Fi, and Bluetooth® wireless technology. Digital Camera, SD-Card-slot and a 3.5" screen are present in the h6315. 75MB of RAM are available for the user.

Compare iPAQ Prices.

See also the recent story about the unreleased HP rw6100 Pocket PC Phone.