Oh, how times have changed. It wasn't that long ago that the release of Service Pack 1 for software was a critical milestone. And in the case of many education customers, it became the equivalent of the starting gun for deploying the latest version of Windows to their desktop computers. But the software development process has changed enormously - such as the fact that millions of users were running the beta version of Windows 7 up to nine months before the product was released.
It feels to me like we've shifted the product release mindset, and the period of public beta testing means that people don't have to wait for SP1 to get important issues resolved. And the biggest sign of that is that we've just released Service Pack 1 for Windows 7 - and I found out about it on the Windows blog. No fanfare, no trail of press articles leading up to the release. Just a blog post, and then it will appear on your computer through Automatic Updates soon. (Maybe that's the other thing that's changed - the use of Automatic Updates to regularly stream out updates, without having to wait for a big bunch in the Service Pack)
Anyway, if you're an education customer still in the older mindset of "I'll wait for SP1", then you're wait is over, and it's time to catch up with the other customers who have already deployed Windows 7 and Windows Server 2008 R2.