So finally Google Adsense for feeds said good bye on 3rd Dec 2012. While the Adsense for feeds Blog was stopped on 26 July 2012, Adsense took good 6 months more to stop.
In short this means that the feeds by Feedburner will not serve any more Ads and hence no revenues from your Adsense for feeds!!! This however does not affect your Feedburner account or its services anyways and your feeds will still be served by the feedburner.
No wonder I was lost for hours wondering why are the ads not coming in my feeds only to realize that Google Adsense stopped it ;-)