http://www.the-gadgeteer.com/
This was apparently posted on the 17th.
"I pre-ordered the HP iPaqs HX4705 and RX3715 earlier this week from CDW (before they removed the ability to pre-order from their site). When I called to check the status this morning, the sales person told me that they expect 800 units of the HX4705 in on Monday. I paid for next day shipping on both, so we'll see what happens. The RX3715 shows up as being special ordered for me and will ship on 7/23."