Yes...those boxes will support 4K...What Comcast fails to disclose is that after you receive the box you will be billed an extra $19.95/mo. So before you upgrade your 5 beautiful OLED or QLED or 4K TVs be prepared to pay Comcast an additional $100/mo plus tax just for the privilege of allowing you to view the content. That's $1200/yr. This is because Comcast only makes a DVR box that will support 4K. Most people only need 1 DVR box and you can watch on any TV in the house. But Comcast MAKES you have a DVR for each TV to view 4K. Not only do we pay for content we don't need, we now pay for equipment we shouldn't need. Comcast response is, then don't buy a 4K TV.
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