It was reported last minute prior to WWDC 2012 that Apple planned to launch their Back to School promo today, and indeed they did. The promo is now live on Apple.ca and will offer a $100 iTunes Gift card to go with Mac purchases and $50 towards iPad purchases. You must purchase your Mac or iPad from Apple or an Authorized Campus Store between June 11th and September 21, 2012.
You also need to be eligible for education pricing (ie educator, university/college student). Education pricing is available for Macs but not the iPad. The Back to School Card may be used on the Mac App Store, the iTunes Store, the App Store and the iBookstore. If you get a refund on your new Mac or iPad, the amount returned maybe be reduced by the full amount of these promo cards.
With the 15″ next generation MacBook Pro announced with Retina Display released, maybe this is the time to buy a new MacBook!