We've heard talk of the Gem before, and a new listing for the phone in Best Buy's September buyer's guide confirms the existence of Verizon's new low-end Android piece that'll likely slot in below the Fascinate in Sammy's lineup for the carrier. Looks like it's slated to launch with Android 2.1, not 2.2, and will include both TouchWiz 3.0 and Swype -- both Samsung staples at this point -- along with a 3.2 megapixel cam and 16GB of microSD expansion (though it's not clear whe