The latest issue of Famitsu has a full four-page spread dedicated to showcasing Twilight Princess HD, which you can see below. According to these pages, it appears as though you will collect fewer Tears of Light in Lanayru, which should significantly improve the game over the original GameCube/Wii version.
These scans reintroduce the game, but the shots are too small to notice if there’s any change to the lighting engine and how it works. The textures have been greatly improved and that much is obvious just from the few screenshots available in these scans.
Hopefully we’ll see a Nintendo Direct soon to give us an idea of when to expect in terms of changes for the game before the March 4, 2016 release date comes.