A while back, the HP iPAQ 510 Voice Messenger was listed as Coming Soon on the US HP online store. A quick check today shows that it is now out of stock. This suggests that it has begun to ship out to customers.
It is a quad-band GSM/GPRS/EDGE candybar smartphone powered by Windows Mobile 6 Standard and a 200MHz TI OMAP processor. It also comes with 64MB RAM and 128MB ROM, a 2.0-inch 176×220 display, 802.11 b/g Wi-Fi, support for VoIP and push-email, Bluetooth 1.2, and a microSD slot.
The HP iPAQ 510 Voice Messenger sells for US$319.99.