NEW YORK (AdAge.com) -- Bloomberg's digital future will heavily involve distribution of original video news content to mobile-phone users around the world, according to Andrew Lack. The former president of NBC News was named CEO of Bloomberg's new Multimedia Group eight months ago. And ever since, industry watchers have been speculating on Bloomberg's digital expansion strategy. At last week's Advertising 2.0 event, Mr. Lack detailed some of his visions.