Dare i say it but, i originaly thought that OS4 meant OS4 Components, but for the Hyperion Team to be coming down and demonstrating this, it must be a bit better then just, OS4 Components. That is, im a little more optomistic about a demonstration of a running OS4 (that is, ExeSG and the rest of the goodies).
Of course, we're not going to see it on A1, at least im not expecting too. It'll be on a classic Amiga, but it might be OS4 this time instead of OS3.x with some OS4 components slaped in!!!