LTE-U or LTE on the Unlicensed spectrum. To be even more technically specific, on the 5 GHz band. It is either the future of mobile data connections or will bring forth Internet apocalypse. Tech companies from all corners of the industry are split on the matter and have even asked the Federal Communications Commission to mediate. The FCC still hasn't taken a formal stance yet, but, in the meantime, it will be allowing those from the pro LTE-U camp to continue some tests and try to prove their position.