Speaking of "frameless" rendering, I noticed during Carmack's Oculus keynote (
https://www.youtube.com/watch?v=gn8m5d74fk8#t=764), he talks about trying to persuade Samsung to integrate programmable interlacing into their displays in order to give dynamic per-frame control over which lines are being scanned.
This would give you the same "adaptive per-pixel updating" seen in your link, though primarily to tackle the problems with HMDs (low-persistence at high frame-rates).