I voted yes, but I want to clarify that. I believe we will get a different shape that doesn't focus on thin and thinner parts but rather one uniform thickness throughout. In all actuality, the very important part to me is the weight. I think Apple will use the iPad for design cues. Meaning the side of the iPad will be what the MBA looks like from the side.
I believe they will go for a smaller footprint, but I don't think using a smaller display makes sense. Imagine cutting the bezel by 2/3 and trimming the bottom case around the keyboard. The bottom case should have keyboard nearly edge to edge. The bezel should have a "bead" like shape on the sides. This is what I think makes sense, and it doesn't require using a smaller display. In fact, Apple could use a 15" display in not much bigger of an MBA.
I think there's an outside chance of carbon fiber or liquid metal. Either would be key for lightweight Macs. In addition, whatever Apple does with the MBA will probably be design concepts used in the MB, MBPs down the road.
I would love to see a wireless card by Verizon in the next MBA. And I think it is a waste to not just add them to every Mac notebook sold. The cost of the 3g wireless chip is peanuts, and I am sure Verizon would pay to add them to every Mac. That way there wouldn't be an added cost for the wireless card, and anyone at any point could just activate their wireless if they wanted.
I am really excited about this! I believe it's really coming this time. It has been a long wait... and it's about damn time.