Below is the changelog compared to Breath:

All scripts were rewritten in python
    Easier syntax
    More error catching
    Better user input
Switched from using cloud images to using clean bootstrapped rootfs/bootstraps
    Fixed a lot of cloud image related issues
    Fixed arch
    Fixed Fedora
    Fixed a lot of desktop environments
Verified all desktop environment choices and distribution combinations
Added Pop!_OS support
Fixed Crostini support
Unified all audio scripts
    wrote AMD support
    wrote AVS support
Added a mainline kernel (Depthboot will switch to the mainline kernel completely in the future