Beginning this Saturday, August 6, myTouch 4G and G2 owners can bring their devices into any T-Mobile retail store to upgrade to Android 2.3 Gingerbread. Though the OTA updates are already underway, this is a welcome option for those with little patience, as the roll-out is said to take a number of weeks to complete. The update will bring all of Gingerbread’s goodies to the devices: the G2 will receive version 2.3.3, while the myTouch 4G will put its front camera to good use with version 2.3.4. Remember, the process will wipe your data (your SD card will be safe, though), and can take up to 30 minutes of your time. Hit the source links for the full list of Gingerbread improvements for each device, as well as what to expect when you visit your local T-Mobile store.