Some reviewers online have received or bought Walmart’s Onn 4K Plus TV box. The unreleased TV box features an updated processor, more storage, and faster Wi-Fi compared to the standard Onn 4K model.

They're so much the norm, in fact, that it's unlikely to find more than a few non-4K options in stock at any given store. If you're looking to buy a 4K TV to catch up on all those Oscar nominees ...