I got mine on Thursday (and for those who are wondering, I'm on the West Coast). No call, no email, no notification of any sort. I signed up via a link that appeared on my Chrome New Tab page (Dev build...if that matters).
I'm thinking though that you may receive one even if you didn't sign up if you had previously signed up with Google as an official beta tester. I don't remember exactly how to do that, but I remember clicking a link in Google Docs asking if I wanted to test Google's products in the future...
As far as the notebook itself...honestly I'm a little underwhelmed. For all you that feel gipped, I would say you can get 97% the same experience if you go to your laptop/desktop, open Chrome, maximize the window...and do whatever.
Yes, the notebook itself is pretty sexy and while I definitely appreciate its portability, that really has nothing to do with the point of these notebooks. Chrome OS is very obviously beta. It is painfully slow at loading multiple tabs and nearly unusable when Flash is involved. Printing is a hassle since most printers out there don't support cloud print; I have to go to my main computer to actually print anything (or at least have it on and awake). Battery life is perhaps the best I've ever seen. 8 hours is conservative to say the least. Unfortunately, the processor is dismally underpowered and while it might do for testing units, god forbid any manufacturer attempts to put it in a consumer unit. Also, I want a delete button; I just do (none of that Alt-backspace crap.)
In terms of fixes though, I noticed that on day one, when I rested one finger resting on the trackpad (often unknowingly) and tried to use another to move the cursor, nothing would happen. I recently noticed, however, this seems to have changed in that now it does as Jerzyiroc mentioned with the page scrolling. I hope this means Google is REALLY on top of bug reports and fixes and will continue to improve the OS in a speedy manner.
Also, for anyone who has a Cr-48...or might know the answer to this...I noticed a slot underneath the battery that looks like it would be for some sort of SD card...but I have heard no mention of it anywhere, any ideas? Expandable storage? ...I don't really wanna go sticking things in there without knowing what it is=/