Yes, a new TV broadcast standard (ATSC 3.0) is slowly coming to the US. The goals of ATSC 3.0 are to improve the television viewing experience with higher audio and video quality, better reception on both fixed and mobile devices, and more accessibility and interactivity.
The ATSC 3.0 Physical Layer (ATSC document number A/322) will allow broadcasters to choose from a variety of parameters, enabling each station to tailor its signal to best serve its local market — providing the combination of services and coverage area best suited the market and terrain.
Work continues on the rest of the ATSC 3.0 standards — audio and video compression, closed captioning, emergency alerts, security, applications, interactivity, watermarking, Internet Protocol delivery, etc.
About 20 standards are expected to be part of ATSC 3.0. All ATSC standards and recommended practices can be downloaded at no charge from the ATSC website.