The update is open for beta testing and is applicable to Nokia N8 phones running Symbian Anna. It brings a ton of imaging-related features to the phone, such as UI improvements, more Settings, faster, improved red-eye removal and much, much more. These all come, of course, in addition to the highly anticipated 30fps video mode and continuous autofocus. If you don't already have Symbian Anna, you might want to check for the update and apply, after which you can head over to the Beta Labs and install the camera update.
Source: Nokia Conversations, Nokia Beta Labs