Earlier this week, Buzzfeed reported that Apple was going to start phasing out its iAd advertising network -- rather than having an ad sales business, the company was rumored to automate things and let developers submit ads directly. While that still could happen, language in a message posted today from Apple to developers is more definitive: iAd is shutting down on June 30th.
Update: Correction, the iAd program as a whole is not shutting down. What is happening, is that the similarly-named iAd App Network, which allows developers to advertise their own apps through iAds, is going away.