Kotaku - Sources: Sony Is Working On A ‘PS4.5’

[teigaga]

Bryank75 said:

As I said earlier, they are probably aiming for UHD, not 4k. They are different. UHD is anything above 1080p.

Yeah, if people excepted 720 as HD then no reason why they can't market it as a 4k system with the actual game results often falling at resolutions below that but sill above 1080p.