Yeah, well you also heard that processors only last 3 years. Considering the source, I'm not too concerned.
since the average lifespan of an intel processor isn't much above 3-4 years:
Seriously... that's all I hear.. amazing..
There is nothing wrong with the 2010. If you are not crunching video or a heavy photoshop user, you will be hard pressed to find much difference.
Things that would stand out when compared to the 2011 would be no backlight keyboard or thunderbolt.
Thunderbolt is said to be slower in the 2011 MBA's. Perhaps 2012 will bring a full speed controller that will work in the MBA.