Uncharted: The Lost Legacy review codes are currently going out, and the file size has been revealed from downloading the review code which comes in at a huge size of 44.7GB. For comparison Uncharted 4 was 48GB at launch to install, and that was a huge download at the time.
Many thought that Uncharted: The Lost Legacy was just going to be short expansion, but it looks like that will not be the case with a file size as big as 44GB. There’s also a point to be made that Uncharted 4 was released before the PS4 Pro launched, so it didn’t contain the higher resolution of 1440p/HDR patch which bumped up the overall file size of Uncharted 4.
Uncharted: The Lost Legacy will also have a resolution of 1440p and have HDR support which most likely bumped the overall size up straight away compared to Uncharted 4. Don’t expect The Lost Legacy to come close to the length of Uncharted 4 as Naughty Dog have already confirmed it will take much less time to complete it compared to Uncharted 4.