Although there is no mention of a new lighting system – or a transition to a new engine – the teams confirmed that the PC version will feature 2K textures. According to the publisher, the PC version of Dark Souls Remastered will support native 4K resolutions and all of its textures will be in 2K and unconverted (our guess is that this means that the textures will be uncompressed?).
But, it seems like they'll be working on the textures a lot, and the jump to 60fps will be very nice. I'm a little cautious about which way this will go, but I think it'll be one of the better remasters.