If they don't provide at least some new information at, or before the 2012 AmiWest Show, something is really wrong, considering the initial statement from last year's AmiWest Show was that the Hyperion OS4.x NetBook would be released some time around June or July of 2012.
I follow Hyperion's OS4 since the beginning. And if I found any consitency over the years it is that they announce and promise a lot and fullfill only a pretty small farction. Hence, I don't believe any announcement w/o evidence.
This netbook thing was a marketing stunt and not a sophisticated one. That was easy to see from the beginning and I said so when it was announced. they found this stupid Limebook, looked briefly to the specs and decides to call that the OS4 netbook. Unfortunately this netbook is a f*cked up one. The supply (at least) outside China is de facto not existant, a driver for the PowerVR gfx engine is not easy to make (no open documentation) and additionally the 512x chip family comes w/o a hardware warranted cache coherence. The limebook itself, looks rather like a toy computer. It's old and outdated now.