This device has me quite excited, if it has been done properly I will procure one at the earliest opportunity! I am quite an Apple fanboi at the moment but this could all change very soon (blog post on that subject).
It has been a long time coming, the first thread on Geekzone about it is here and it likely won't be available for a few months yet but I am at this stage very very tempted. I hope I am not disappointed.
This thread is where you will find the Padfone details as they emerge, feel free to contribute :-)