What are the chances we will soon see Horizon used for Xbox One. With the developer mode now in place it enables the user to freely add and remove files from the system same as we saw in the 360.
We don’t have any plans to release an Xbox One tool or add support for it to Infinity until there’s a way for people to easily edit their saves (not dev mode, which can’t access the saves anyway). However, there’s a program named Vantage that was released a few weeks ago that edits cloud saves. It only works for Play Anywhere games (games that are available on the Windows Store and Xbox).