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

[SvennoJ]

walsufnir said:

Soundwave said:
According to Zoetis, an insider on NeoGaf this is coming this fall and mainly what it will do is allow PS4 games to run at 4K resolution.

 

I wonder how they want to achieve that. Perhaps with a standard upscaler. No way it will render existing games in 4k natively.

That's 1000% more likely.
A slim version with HDMI 2.0 port and upscaler to output all content in 4K. Just like the 360 upscaled everything to 1080p last gen. These 4K upscalers have been in blu-ray players for a couple years now, easy to add. Someone simply misunderstood what they were overhearing. Rendering console games in 4K is a long way off.