I'm watching the video, and I can see that a number of the ports and slots were moved around but not much else has changed. The Prime still has the HDMI out, microSD card slot,and headphone jack found on the current model. It also has a keyboard component, which is thinner than the one sitting on my desk but not fundamentally different.
Weight is down, but battery life is up. The Prime boasts 18 hours of runtime, compared to the 16 hours on the current Prime (with the keyboard attached). I usually got around 14 hours, which is pretty good for a netbook.
It's due out in December, with a projected retail of $499. The keyboard costs extra, of course. You can pre-order it now from Best Buy, B&H, GameStop, and Tiger Direct. For Canadian customers, Future Shop and NCIX are accepting pre-orders.
If not for the fact that I am very happy with my eeePad, I would definitely get this one. The current eeePad is both one of the best netbooks and best Android tablets on the market. The next one is bound to be better.