TELUS, Bell and Rogers have had the Samsung Galaxy Tab 10.1 Android 4.0.4 Ice Cream Sandwich update in testing for a while now and today, they've finally gone ahead and made it available to everyone. if you have a variation of the Galaxy Tab 10.1 from any of those Canadian carriers, you should be able to go ahead and check for OTA updates and find the software waiting for you. Having loaded an international version on my own Galaxy Tab 10.1, it's a pretty nice update. Drop by the Android Central forums if you're looking to discuss it more.
Source: Mobile Syrup