$100 Million Payday For Feedburner – This Deal Is Confirmed from TechCrunch has Michael Arrington saying last week’s rumors of a Google purchase of FeedBurner are true:
Feedburner is in the closing stages of being acquired by Google for around $100 million. The deal is all cash and mostly upfront, according to our source, although the founders will be locked in for a couple of years. The information we have is that the deal is now under a binding term sheet and will close in 2-3 weeks, and there is nothing that can really derail it at this point
So still nothing official, but TechCrunch has a pretty good track record on these things.