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I'm rather surprised by the lack of updates in the MacBook Air, but even more surprised that the regular white MacBook is dunzo. Although I was never a fan of the latter model even though I had one. (And I hate myself for saying this, but I sort of want a MacBook Air now...)
Hand-in-hand with the release of the OSX Lion operating system update, Apple has some new hardware components as well. Read this blog post by Rich Brown on Crave.