The MBA and Sony Vaio laptops are the two most popular computer choices of grad students. You will see a lot of Vaio Z's, I am sure. It is really one heck of a capable computer. Windows 7 is no slouch either. On the campus I visit, about 90% of professors use MBAs and 50% of students use MBAs and about 90% of those have Windows installed via Boot Camp. About the other 50% use Sony Vaios. It's literally RARE to see a grad student without either an MBA or Vaio... occasionally an MBP but there always the "geek" left out of the group with way too much horsepower for the requirements.
I am going to go WAY OUT on a limb and expect that although it should have been introduced four months ago, it will be released on March 16 as is rumored over in the MBP section of MR.
What I expect...
Either -
Core 2 Duo CPU, Nvidia 9400m successor, 4 GB RAM, 1 x USB 3.0, same form factor, 128 GB and 256 GB SSDs standard. $1299 and $1599.
OR -
Core i7-640UM (1.2 GHz to 2.26 GHz Boost - it's essentially what the current C2D is doing anyways), with Nvidia 310m and Optimus, 4 GB RAM, 1 x USB 3.0, same form factor, 128 GB and 256 GB SSDs standard. $1499 and $1799.
What I want...
Core i7-640LM 2.13 GHz to 2.93 GHz boost, Nvidia 330M with Optimus, 8 GB RAM, 1 x USB 3.0, 256 GB SSD, HD 1440 x 900 13" IPS Display, Silver aluminum capped keys on keyboard, digital audio out (no black parts at all), Blu Ray external (optional $299), new hinges, no bezel with display going right to the edge, aluminum case removing all wasted space that currently is bezel and all space around keyboard, silky-smooth glass buttonless trackpad, weighing in at 2 lb. (same thickness in remaining areas not removed around bezel), and finally a 10-day battery powered by (cold water fusion) a single drop of water... meeting every green certification possible so Apple can market it as the "Greenest Mac Ever." What I will pay, $5k as requested... willing to pay more for "extras." Less without the absurd and (currently) fictional battery request.
FINALLY, I have said this in other threads, but I am saying again here... When the real update comes, probably late this year, the MBA will get a new revolutionary display of some sort. It might be an HD IPS display, OLED, or even 3D... but this will happen within two updates of the current version of the MBA. Remember I have been saying this for four or five months and I am sticking with it no matter how ridiculous it sounds.