Personally, I have been predicting lackluster sales. For starters, there is nothing new out there. Retailers are counting on drones and 4k televisions to buoy sales, but I think they are wrong on both counts. I don't know anyone who wants or wants to give a drone. (Brad, do we need a dedicated drone discussion?) While I think people who are looking for televisions will get 4k sets, I can't imagine anyone replacing a 1080p or even a 720p set with a 4k set. So you are limited to people looking to add a set and we have all bought a LOT of televisions over the last decade.
I do not know a single person who bought a 4k television. I do not know a single person who is shopping for one. It's hard to search these forums for posts containing 4k, tv, uhd, etc., but I don't see any 4k sets in the 'what i got' thread.
I would love to hear from people who actually bought a 4k tv or are actively shopping for one. If you bought one, post a link to the tv you bought and tell us who you bought it for, why you bought it, where you bought it, and how much you paid.