Could this be why MS is still going with the six different versions?
Don't get me wrong, 7 Beta runs wonderfully. However, you should be paying attention to what's not being talked about by the marketing department (i.e., there's stuff there they'd rather not discuss).
I imagine that the Home Basic version will still suck royally and that MS will expect a few hundred (if not more) bucks for the upgrade. It'd be nice if we could get out of the Vista morass for $99 (flat). I'm not holding my breath though.