Ratchet and Clank will release a free software update to support the additional power that PS4 Pro offers.
The patch should be available on or prior to the launch date of PS4 Pro.
Users with a 4K TV, you’ll be able to play Ratchet & Clank at a much higher resolution, and if your TV supports it, in HDR using an HDMI 2.0 cable. PS4 Pro users with a 1080p TV will see a big increase in gameplay image quality as well.
Using Temporal Injection to provide a much higher resolution with jaggie-eliminating anti-aliasing as well. This extra resolution and HDR’s ability to display even more of the colorful Solana Galaxy should combine for the best image quality you’ve ever seen in a Ratchet & Clank game.
And for those with an HDR-enabled TV but still using a regular PS4 or PS4 Slim, our patch will also enable HDR for Ratchet & Clank as well.
Source: PlayStation.blog