That is interesting, fairchij.
POET posted those same low operating voltages for the 1um complementary inverter:
http://app.quotemedia.com/quotetools/newsStoryPopup.go?storyId=61114276&topic=PTK:CA&symbology=null&cp=null&webmasterId=92583
I wonder if the 100nm effort will reduce the threshold even further. Without being an expert it makes sense that it would, which also seems to be supported by the fact that GaAs runs cooler.