Improved graphics, textures, resolution and effects looking like the 2011 tech-demo
Hero mode
Return to the GC set-up due to Gamepad
Map and inventory through Gamepad
Bigger wallet
Automatic horse engine from Zelda "U"
They aren't going to change anything in-game. That would be too much work with no gain; even in Ocarina and Majora's remakes, which were real remakes, they didn't add or change anything significant. Master Quest for Ocarina, already existed. TP HD's intro will be the same because they aren't going to rewrite the script, the dungeons will be the same because why change some of the best in the series, the overworld will be the same. I'm not aware of anything that was cut from the game, on the contrary, it probably used cut things from the other games, so there's not going to be anything to restore either.
