Looks like Microsoft took Big Red's challenge and decided to respond in kind, as the official Windows Phone Twitter feed claims that Windows Phone 7 devices are finally headed to Verizon. They'll allegedly arrive this holiday season, a good bit earlier than we were told, but we doubt you're exactly dismayed to get your hands on CDMA WP7 phones ahead of schedule. You know how we hate to mince words, but "devices" does suggest more than one phone, and those of you warily eying your local retailer's selection o