Yes, the code for this is fairly new and developers have jumped on using what has been shared as open source to build their own software tools (which a lot of us are already using) - the most obvious uses for me have been for faster transcribing by ear or creating play along tracks for practice (just bass and drums for example). I have not been very interested in using it as a compositional tool... but remix makers have been dying to have tech that provides them solo vocal stems from artists who do not release them. And now we are starting to see how MPC style music producers will take these extracted parts and slice them up into short samples to write new things with.
Who are the first DAW developers to see this is a feature DAW owners will want inside the DAW? FL Studio, MPC Stems, Serato Studio, MixCraft, RipX DAW, Audacity and I am sure there are others that will have it within the year. It's just another feature of digital music editing that was not possible (or at least not reasonably easy to do with useful results) before. So, the feature is just a new tool that will be added like others before it.... pitch correction, time stretching without altering pitch, editing the pitch of individual notes within a complex audio recording (melodyne), or changing the timbre of a singer to sound like another, AI mixing and mastering.