Telus has released the Official OS 18.104.22.1681 available to download for Bold 9700 aka Onyx and Curve 9300. If your device is released by Telus, you can upgrade it automatically via BlackBerry Desktop Manager. If not, you have to upgrade via Loader program.
WARNING: Do this at your own risk. I am not responsible for any problems that may occur as a result of following this guide.