The best you can hope for is the ability to play 4K Blu-Ray's and perhaps some indie games.
The article linked in fact refers to 4K playback.
The current hardware in consoles is nowhere near powerful enough to run the latest games at 4K at playable frame rates. (Maybe some indie titles)
The chances either Sony or Microsoft will release a more powerful console (and cause such huge fragmentation) is very unlikely.
Also Sony (and Microsoft with the Xbox one) learnt their lesson that expensive hardware doesn't work. Sony hit trouble with the PS3 because of the price. It was only successful after many price drops (and some very good exclusive games).
Neither of them are going to go down the loss leader route either in the hope of making profit solely on games, accessories and online subscriptions.
If we're taking about the chances of a revised console with 4K video playback then yeah I could see that happening. Infact I'd say it's very likely we'll see a console revision this gen.