Maybe they figure that students are more likely than other developers to seed Leopard as a torrent? And giving students an already digital copy makes that process even easier???
Bit late for them to worry about that. The torrent has been out for nearly a week. Or so I hear.
At least you guys got an e-mail. I have nada, though I've just switched to GMail's IMAP and it's all being a bit weird, so maybe it'll pop up soon.