Here's the word straight from Bloomberg's unnamed sources: Sprint's not only getting the elusive iPhone 5 -- it's keeping an unlimited data plan around just to sway buyers who may otherwise spring for the AT&T / Verizon Wireless variants. Furthermore, these folks in-the-know have good reason to believe that it'll be launched "next month," which gives Apple a shockingly small amount of time to invite us over for a west coast reveal. As it stands, the only folks who'll get limitless data with an iPhone 5 on its existing US carriers are those with grandfathered plans; any new customers on Ma Bell or Big Red will be forced to select one of many tiered options. Not surprisingly, neither Sprint nor Apple are commenting on the story, but if it all proves true, Sprint can definitely hang its hat on having one serious competitive advantage.[Thanks, Prhime]