I'm in the Western United States and last week they updated the site sometime around noon. So I'm guessing they'll do the same this week...
I have to agree with you, people keep wanting a new design but for me the Macbook as it exists has a simplicity about it that says "how could you improve on this?" I look at dark side laptops and most have some sort of "ornamentation" that appears to be trying to create a sense of style which fails miserably against the MB.
I am waiting for the 45nm chip, an up to date screen and a (maybe) a multi touch pad.
My Pismo was the last of a good line, I don't mind buying another "last of a good line" if it lasts me another seven years.
Apple have to upgrade soon to keep competitive but the big upgrade will come later is my guess.
Macbook Air, I suspect, is a distraction with another purpose.
High noon on the West coast, what time is that in the real world? Suppose about 2 am on Wednesday here.