I want to buy a macbook pro during the back to school sale, which runs until 9/7/10. I also want to use the credit to buy an iPod Touch AFTER it receives an update, which usually happens 9/9/10. The credit is good 90 days after the macbook ships, and I would like to buy a Macbook as soon as possible. However, there is the leaked intel roadmap, which shows that there will be a possible quiet update to the Macbook Pro in the Fall, with the 2.8GHz Core i7-640M. 1) Will this happen before the Back to School Sale is over, is it worth the wait? 2) Will this update will cost more than the current 2.66GHz i7? 3) Will the i7 run much hotter than the i5? This may affect how much I can overclock the 330m.