Exciting stuff... revolutionary, even.
Mind you, he's only demo-ing it on guitar parts (and acoustic ones at that) that have strong transients and well defined harmonic structure, this may prove far more difficult on dense, sustained chordal material. But it's a breakthrough, nonetheless...
However, as this will not see the light of day from the inventor himself until much later this year, and requires a degree of computer horsepower far in excess of what is in arrangers today (and may even prove too much for many computer DAWs if you want everything else to play at the same time), speculation about this making it to the Audya is wishful, at best.
You saw the files being analyzed offline before the process started, ruling it out for realtime use, for the time being. But, maybe a few years down the pike, this WILL be the way to go. But I predict we have a good five or more years to go before an arranger can provide the horsepower to do this on several parts simultaneously, while still running smoothly at all it's other tasks.
We live in exciting times, don't we...?