On the surface, a very attractive option, esp. as 2nd hand Minolta lenses are in abundant supply at good prices. Given that many who jumped on the 300D when it came out may only have one or two lenses (and not necessarily good ones), I think the Minolta could still be a viable upgrade route.
I think this camera, and what ever Olympus come up with, will be the most interesting elements of Photokina ... Nikon D2X will be out of reach for most, Pentax and Canon ... well, to be honest, nothing innovative here (don't get me wrong - the 20D looks like a great camera, just no surprises). And the Fuji S3- seems to be a fair bit of disappointment with this.
Oh, yes, almost forgot there will also be a new Sigma which may have some surprises.
Colin K. Work, Pixstel