Well, this is intriguing: Walmart just officially announced that it'll be selling the iPhone 3GS for $97 starting Tuesday, a full $100 off the regular price. Given the high probability that Steve Jobs will introduce the thoroughly-leaked next-gen iPhone when he gives the WWDC 2010 keynote on June 7th, the price cut seems like either an attempt to clear out remaining inventory, or the 3GS is sliding down the line to replace the iPhone 3G -- a move which would corroborate some whispers we've heard today that the 3G is no longer being shipped to stores. Either way, the 3