Over the air TV is limited to 720p or the more common 1080i. The better the video processing in the TV the more acceptable the picture will be. Low end 4k TVs cut costs by not doing a good job at this so make sure to see the TV with a broadcast signal.
There will be a new ATSC 3.0 standard that will allow but not require 4k HDR broadcasting. The tuners for this standard don't exist yet but you will be able to add one later.
Over the air TV is limited to 720p or the more common 1080i. The better the video processing in the TV the more acceptable the picture will be. Low end 4k TVs cut costs by not doing a good job at this so make sure to see the TV with a broadcast signal.
There will be a new ATSC 3.0 standard that will allow but not require 4k HDR broadcasting. The tuners for this standard don't exist yet but you will be able to add one later.