Google has now confirms what many believed. Google is buying FeedBurner. Google won't say how much they are paying.
FeedBurner is based in Chicago, Illinois and has 30 employees. No information has been given on the future of the employees or if they will remain in Chicago or move to Google headquarters in California.
Here is a Google announcement about the purchase, which also contains an audio press call
Official Google Blog: Adding more flare
This link is to an article about the Google purchase confirmation
Google Confirms FeedBurner Buy