Advertising Age: Digital newsreaders, music-streaming services, mobile wallets — these are all promising products that have yet to gain mass adoption. Maybe that’s why Apple has decided to give each a try. On Monday, Apple unveiled a revamped mobile wallet and new news-reading and music-listening apps at its annual developer conference in San Francisco. Apple Music will roll out on June 30 for $9.99 a month. The company also has developed a new Flipboard-like app called News that will feature custom-formatted articles from publishers including ESPN, Vanity Fair, BuzzFeed and the New York Times.