A screenshot showing the select box in action is attached below.
Currently only Original iPhone and iPhone 3G are listed as choices; however, this screenshot could be from a unpublished website that will go live once AT&T begins selling the device.
Earlier today an AppleInsider report showed evidence of the new iPhone in Carphone Warehouse's system. The phones were referenced as iPhone32GbV3. TUAW suggests that perhaps the V stands for video?