As someone who records multi-track drums all the time, I am looking forward to giving this a try. Having said that, there are already mechanisms for doing this in Sonar, such as using AudioSnap or Melodyne to generate midi notes from audio transients and using those midi notes to trigger a sampler or drum synth.
What intrigues me, though, is the potential to detect a particular drum from a mix. Although I mic each drum individually, sometimes bleed from another drum is detected as a beat (which I usually edit out manually). If Cakewalk's new tool takes care of that aspect, it will definitely save me time.