Turns out it is not really new but only open sourced it now. From the FQA.
>Lore, formerly called Unreal Revision Control, is the built-in version control system for UEFN (Unreal Editor for Fortnite), where creators have been using it to version their islands. It is also seeing progressive adoption by internal Epic teams, and is being implemented as the backing store for UEFN’s cook pipeline, where it replaces traditional intermediary storage layers—eliminating redundant file transfers and significantly reducing the time between publishing changes and those changes being playable.
Surprised it is in Rust and not Epic C++ or Verse. I wonder why.
>Lore, formerly called Unreal Revision Control, is the built-in version control system for UEFN (Unreal Editor for Fortnite), where creators have been using it to version their islands. It is also seeing progressive adoption by internal Epic teams, and is being implemented as the backing store for UEFN’s cook pipeline, where it replaces traditional intermediary storage layers—eliminating redundant file transfers and significantly reducing the time between publishing changes and those changes being playable.
Surprised it is in Rust and not Epic C++ or Verse. I wonder why.