We get it, some of you are feeling a little burned by the iPad update today. It was only about eight months ago that Apple's slate was last refreshed with the stunning Retina display, now its gotten a subtle, but hardly negligible spec bump. If you're having a little bit of buyer's remorse and only made the plunge in the last 30 days, you might be in luck. According to CNET, at least one Apple store (the Stockton Street branch in San Francisco) is offering a free upgrade to a fourth-gen iPad for those that picked up the 9.7-inch tablet i
