Amit from Labnol has suggested a simple tip to integrate Google Analytics with Adsense without having to wait for google to roll-out the feature. This is a wonderful feature which helps you track the click performance and ad revenues just like you track any other stats.
What you need to do?
Open this Google Form and fill in the basic details like Name, email address, website name and Adsense publisher ID and click on Submit. After 1 day, check your adsense dashboard and you should be able to see a link asking you to associate your adsense account with Google Analytics.
You can head over to labnol for some nice video tutorials on integration of adsense with Analytics and its usage and features.