I remember when the 'HD Ready' logo was introduced in 2005 that it seemed like a gimmick as many high resolution TVs without this had native resolutions of 720p or higher, some even 1080p. It was when the first HD content started becoming available on Blu-ray, HD DVD and Satellite that it became clear why having a 'HD Ready' set was important - Not for the resolution, but for the HDCP requirement to use the HDMI or DVI connection. Earlier HDTV adaptors ended up having to resort to analogue component video or getting a suitable module or DVI to component converter unit.
This news could potentially mean a repeat for early 4K TV buyers. For example, if let's say a similar certification logo is introduced for 4K TVs and content, streaming providers could be made to require such a certified set-top box for the customer to stream the latest 4K movies and of course that set-top box would need the same TV certification to allow playback, where Cinavia is part of the certification requirements.
On the other hand I think this will purely affect paying customers only and here's why. Have a look at the number of seeds and peers for 480p, 720p and 1080p versions of a Torrent for any popular title available released in 1080p. Generally the 480p will have the highest number of seeds and peers and the 1080p version with just a handful of seeds and peers, especially for TV shows. Most downloaders don't go for the 1080p just to pixel-peep are their TVs. The main people interested in using 1080p are those who actually bought the discs and would like to create the highest quality rip for their media player or as a backup. I'm sure once 4K rips become available of upcoming releases, the only people interested in downloading them would be those who just bought a 4K set to give it a test run or those who have an uncapped broadband connection, lots of storage space and don't care about the download time.
As for getting people to upgrade from Full HD to 4K TVs with an upcoming certification, the movie industry is going to be in for quite a challenge. With the upgrade from CRTs, the advantage was pretty clear - a much bigger TV and noticeably improved picture. As for 4K, ... well maybe the few who can afford to renovate a room for an 80" TV and I'm sure these people are not going to be the ones turning to BitTorrent for their 4K content.