AllThingsD editors Walt Mossberg and Kara Swisher are leaving News Corp. at the end of the year, and have reportedly completed a deal with NBCUniversal for a news and conference business. Mossberg and Swisher will have majority control over the company while NBCUniversal and another unnamed investor will share one-third of the business, according to an unidentified source. Most of the current AllThingsD staff is expected to join the new holding company. Continue reading Mossberg and Swisher Leaving News Corp. for NBCUniversal