Heat and noise (battery too) are all very important for how comfortably I use mobile notebooks. In the similar way you just don't have to think about heat and noise on iPads, and unlike pre-2010 MBAs, heat and noise are never an issue for the 2010 11" MBA Ultimate for normal use (browsing, videos, typing etc). I have never thought eg "better close some tabs" or "i should lift this from the sofa for a few mins" etc. I note that there's a fair bit more discussion on heat and noise in 2011 11" MBAs and that (along with the worse battery) are among the reasons I didn't upgrade immediately. The 2010 11" MBA Ultimate used the Intel SU9600 1.6GHz C2D at 10W TDP and it's been working like a treat. It also had the Nvidia GPU chipset too though I don't know what the TDP on that was. The Ivy Bridge line-up appears to show 2 options for an 2012 11" MBA: 1) Core i5 3427U - 1.8GHz, turbo to 2.6GHz - 2.8GHz at 17W TDP 2) Core i7 3667U - 2.0GHz, turbo to 3.0GHZ - 3.2GHz at 17W TDP Are there possibly any further Ivy Bridge mobile processors to be announced and anyone have any thoughts on likely heat/fans/battery on the 22nm Ivy Bridge for a MBA for non-intensive use?