I'm considering getting the 2012 MBA 13" as my main computer. Problem is that that is not enough for me, but having desktop also doesn't sound intriguing so as a compromise I'm thinking about getting a Thunderbolt Display to operate as a display plus a dock to have a more desktop like experience. I did some research and have a few questions. Andatech did a great review on TBD ( http://www.youtube.com/watch?feature=player_embedded&v=8Z7RxvkqF5I ). Overall it seems good, but the reviewer said that often times it felt little bit sluggish because the Air (it was 2011, so Intel HD3000) doesn't have enough GPU power to operate such a highres display. How much difference does the 2012 update to HD4000 make? Anyone have any experience on this? Also I don't want to buy 999 display to see new one come in couple of months w/ USB3 and whatnot, any ideas of they're gonna update the TBD this summer/fall?