It’s true, but there is a catch. You need access to an EDU email account.
You can go on-line and submit your email here: http://www.win741.com/
However, that appears to just qualify you for Windows Home.
As an alternative, pick up the phone and call: 1-877-MY-MS-STORE
I just did that and purchased Windows 7 Professional! You can select the Upgrade or the Full version. I recommend you go with the Full version just to eliminate the need to verify you qualify for the upgrade at install time. You can also select to have the DVD shipped, or download. I’m feeling lazy and selected the DVD shipped. If I didn’t already have the RNC version up and running, I might have selected the download and burn the ISO to DVD myself same day.
Windows 7 ships on the 22nd!