Instapaper creator developing new podcasting app

For the last few months, Instapaper creator Marco Arment has laid low. After selling his smash iOS app Instapaper to Betaworks in April¬†and tablet publication The Magazine¬†to the rest of its staff in May, Arment has remained secretive about his next big project. He gave a glimpse of his hard work yesterday at Portland’s XOXO festival, where Engadget reports that he revealed his latest app, Overcast. Aimed squarely at Apple’s current podcasting tech, Overcast is halfway completed and could be out sometime later this year.