I've been thinking about hiphopgamer's Remastering Engine 'leak', and this could be actually true.
We have Bluepoint teasing us with MULTIPLE old games, not just a Souls game. Which could be that Bluepoint is somehow involved with this remastering engine in some way, or they will somehow use it to create multiple PS5 patches for those old games to have better textures or something. So the Demon's Souls will end up being true, just that it's not going to be a PS5 AAA remake, but rather a solid remaster with better textures, like Resident Evil 6 for the PS4.
We also had Ed Boon, creator of Mortal Kombat, telling us that there's a BIG surprise coming in 2020 for MK fans. What if this surprise is all past MK games becoming available with this remastering engine on PSN for purchase, allowing the MK fans to experience all previous MK games on a single console, upscaled to 4k?
The more I think about it, the more I think it's true. So hoping it's true!