It's like a cat and mouse game here with the BlackBerry Style OS' it seems. .407 leaked then became official, now .413 is here, will it go official as well? Not likely just yet but, that's the joy of a leak. You get to mess around with it ahead of time. Be sure to back up your data before load it up folks, it's a leak and as such it remains untested for the masses.
*OS Disclaimer - Please Read: Keep in mind this is NOT an official release and as such is not supported by RIM or your Carrier. If you choose to install, do so at your own risk and only if you're comfortable in the process of upgrading and downgrading your device software. It is quite normal during operating system development for certain features to be crippled or disabled while others are tested, and these beta builds often reflect that. They are not always better. Depending on your BlackBerry comfort level, it may be best for you to wait for community feedback on a build before deciding to download and install for yourself or simply wait for the next official release. If you require support, you will find it in our CrackBerry forums via our extremely knowledgeable community base - do not contact your carrier or RIM for Beta OS technical support (their first course of action will be to advise you to downgrade to a supported OS). *
Download OS 6.0.0.413 for the Style 9670
Discuss more in the forums
Source: BBLeaks