Apple's Store Credit page shows off an interesting screenshot of an iPhone (noted by modrak):
If you notice, this iPhone is up to version 1.1.1 with Modem Firmware 4.02.04_G. Apple has only publicly released iPhone Firmware 1.0.2 at this time. Apple is expected to introduce a firmware update in the near future to distribute the iTunes Wifi Store software.
Forum user confirmed also notes that on the Settings screen are two new settings: