I seriously don't get the reason why some people are saying they'll hold off on buying the new macbook pros if they ain't redesigned, only because we are too late in the life-cycle of the unibody design.
Seriously guys, if you need a computer, you just buy it. It's even better if you buy it just when it's released. But restraining oneself from buying a computer only because it might get a new redesign next year is plain idiotic, if you really thought that, you couldn't buy any Apple product.
I'm buying an 11" air if there isn't a redesign.