This seems like mostly a backend update visually. Are there going to be replaced assets (background/characters)
Viewing post in Sileo's Visual Update & You! All you need to know... comments
Every single visual asset in the game has been replaced, although most of them were derived from the same masters. Some things, like the user interface, had to be remade from scratch - although the new versions of these are intended to closely match the old ones. Besides this, there are several new backgrounds and a new CG in this build. For the most part however, you'll be looking at the same artwork, just in much greater detail than before.