Older gen upgrade available
Sony have released new tech details on the Uncharted: Legacy of Thieves Collection (Uncharted 4: A Thief’s End and Uncharted: The Lost Legacy). In summary they will feature:
Fidelity Mode: 4K 30 FPS
Performance Mode: 60 FPS mode
Performance+ Mode: 1080p 120 FPS
improved load times
3D Audio support
If you own a physical and digital version of either title on the PS4 then a digital upgrade for the PS5 collection will be available for $10.
The collection will release on January 28, 2022 on PS5 and sometime in 2022 for PC.