Maybe this was caught up in the hysteria of getting the new BlackBerry Storm out the doors of Telus shops around Canada, but as of now you can grab the 4.5 OS update for the BlackBerry 8330 and 8130 from Telus' BlackBerry downloads page. The official release being offered is that of application version 188.8.131.52. Sadly though, the BlackBerry 8830 was left out of the update which seems to be the case across all CDMA carriers as I have yet to see a version of that readily available for download in any official form. Not too sure why we're not seeing updates for the 8830 though, given it is a business focused device.
If you are a Telus customer be sure to grab the update and get crack'n on upgrading that OS. If you are unsure of how exactly to upgrade to the new OS be sure to check out our BlackBerry 101: How to Install or Upgrade to a New RIM BlackBerry Operating System (OS) to get you started off on the right foot.