Well, that didn't take long at all.
"Due to overwhelming demand for Chromecast devices since launch, the 3-month Netflix promotion (which was available in limited quantities) is no longer available," Google told The Times in a statement.
I ordered mine from Amazon yesterday; right now, it's on track to ship "now" and be delivered by next Tuesday. No email with the Netflix code yet, however. That could be because it hasn't shipped, and Amazon technically does not charge you until that event occurs. (Technically.)
Have you ordered a Chromecast? If so, have you received an email with the redemption code? If not, is the decision not to order quickly the greatest regret of your life?