Get out the salt shaker, because there's a new Windows Phone rumor making its way across the web today. Citing sources "familiar with Sprint's LTE game plan," SprintFeed is reporting that the carrier is looking to launch a new LTE-enabled handset later this year -- one that'll allegedly run Windows Phone 8, commonly known as Apollo. These sources also claimed that the device still has to run through a series of tests, implying that it would likely hit the market this Fall, at the earliest. Beyond th