News come by way of the Google Blog under the entry name Feed me, that you can now apply to test out AdSense ads in your RSS feeds. I have applied to test it out, should be fun to play with.
For more technical details, visit the Google Support for AdSense page.
Forum coverage currently only at Search Engine Watch Forums, since I posted a thread there. But make sure to keep an eye on the WebmasterWorld AdSense Forum and DigitalPoint AdSense Forum (two forums with heavy AdSense forum discussion activity.