ATSC 3.0

http://www.broadcastingcable.com/news/washington/atsc-30-rollout-can-begin-next-month/171487
http://www.electronicdesign.com/community-home/free-tv-keeps-getting-better-welcome-atsc-30

The FCC recently approved, on a party line basis, new rules that provide for a gradual, voluntary, market-driven rollout of "next-generation" broadcast TV standards known as ATSC 3.0.

ATSC 3.0 is a massive overhaul of the over-the-air digital television system used by North America and South Korea. Notably, the "next-gen" standard is already being rolled out in South Korea, with the main attraction being this year's Winter Olympics being broadcast in 4K "ultra high definition" resolution (3840×2160) over the airwaves via this new standard.
In the US, WRAL-TV in Raleigh, North Carolina has been running an experimental ATSC 3.0 channel (WRAL-EX) which consists of a demo loop of 4K content, and a simulcast of their main ATSC 1.0 channel (NBC affiliate) in 1080p.

Pros:

• Provides for 4K UHD and high-frame rate (up to 120fps) video to be broadcast over the air and receivable with an antenna.
• Greatly increased data bandwidth (up to 57Mbps) on a standard 6MHz channel allocation, as opposed to the current ATSC incarnation's maximum of 19.39Mbps.
• Provides for the use of modern audio and video codecs, including AC-4 and HEVC, which, combined with the increased data bandwidth, will allow for better picture quality of "subchannel" multicast networks, as well as allow more subchannel-based services on the same 6MHz allocation.
• Capable of enhanced emergency alerting via datacasting.

Cons:

• Concerns have been raised about the new standard's use of broadband, particularly to gather viewership information (which would likely be used for targeted advertising and ratings stats).
• Not backwards compatible with the existing ATSC 1.0/2.0 standard (besides the use of newer video codecs, ATSC 3.0 uses COFDM for its signal modulation scheme (similarly to DVB-T2 as used in Europe), as opposed to the current ATSC's 8VSB.)
• Due to the reduction in available TV spectrum due to the recent incentive auction (which reduces the UHF band down to RF channel 36), ATSC 1.0 broadcasts will likely degrade in picture quality as some stations share spectrum with others (which is already provided for due to the spectrum auction), so that others can roll out ATSC 3.0 services by converting their transmitting facilities to the new standard.

Honestly, I just hope that ATSC can handle interference far better than standard NTSC analog. There's a reason channels were spaced out further back in the day, and that's because of frequencies possibly interfering with one-another. It was a problem back in the day with neighboring television markets, and still today as well.