Battery: Apple advertises same battery life as before (5 hour for 11" MBA and 7 for 13"), but according to Laptop magazine testing the 11" lost half an hour of life (5:13 to 4:46) while the 13" lost 10 minutes (6:36 to 6:25). Also CoolBook app (which can add an extra hour) doesn't work for the 2011 models. See: http://www.laptopmag.com/review/lap...x?mode=benchmarks&cids=2392,2844,1461,2393,pa Graphics: Intel HD Graphics 3000; 'nuff said. Weight: Not a big deal, but 0.08 pound was added to the 11" and 0.06 pound to the 13". Of course, the new MBAs have some big advantages in terms of CPU, backlit keyboard, and Thunderbolt support for the cool new Apple Display dock. But the battery and graphic hits are bad news, which will hopefully be helped when the Ivy Bridge chips arrive.