The Radio Shack memo seen below suggests that AT&T pushed back the launch date to August 21. Not a huge delay, of course, but still a delay.
Regardless if it launches on August 7 or two weeks later, the LG Thrill will become AT&T's fifth 4G smartphone. It features Android 2.2 (upgradeable to 2.3), a 4.3 inch WVGA 3D display, Wi-Fi hotspot capability, GPS, dual 5MP cameras with 3D video recording, dual-core 1GHz processor, and 8GB of internal memory.
source: Unwired View