The odds of Jobs introducing an MBA that has a Core 2 Duo CPU and Nvidia 320m GPU are pretty slim. The only way it might happen is with a Verizon 3G/4G card..
Agree - a MBA with a minor upgrade with only a 10-20% performance gain just wouldn't be big enough news. Apple/Jobs are in the "Shock and Awe" publicity game and wouldn't even get out of bed to present a new device with minimal improvement where the audience would sit there thinking "so what".
IMO for a new MBA to get a showing at WWDC it would need one or more of the following:
- battery life now 9-10 hours and bigger drive with minor processor/graphics updates.
- quad core processor, graphics upgrade.
- weight now under a kilogram and slight bump of other specs
- touch screen/migration to a tablet form factor with or without keyboard (maybe even like a 12-13 inch screen iPad but running full OS X and having laptop-like capabilities/performance).
- inbuilt 3G (like many other ultraportables now have) would not hurt either in addition to one of the above.
- Teleport and/or time travel functionality (though rumoured for next years model rather than 2010 model).
- Nuclear power battery with 30,000 year battery life even playing games (felt unlikely until at least 2012 model).
I'll hope for all of the above (except maybe the nuclear reactor)!