Overall, its great to see an official OS upgrade thats not 2 years behind the beta release. I hope this is a trend for the future.
I'm looking forward to an official 5.0 OS with support for Facebook 1.6...or maybe FB 2.0 by that time. Either that or FB compatible with any 5.0.x.xx beta OS.
Here's a link to more info and the download: http://crackberry.com/official-os-releases-t-and-rogers
Or the direct download link is here:
https://www.blackberry.com/Downloads/entry.do?code=1905AEDAB9BF2477EDC068A355BBA31A This link can also be used to check for official OS upgrades for any other Rogers supported BlackBerry. Check it out.
After you download the file, install it to your computer and open your desktop manager. Then follow the prompts from there. It should alert you that a software upgrade is available. Make sure you backup your data before doing the upgrade.
More help and a step-by-step tutorial can be found here: http://crackberry.com/blackberry-101-how-install-or-upgrade-new-rim-operating-system-os