Next Issue Media, a joint venture backed by five major U.S. publishers — Conde Nast, Hearst, Meredith, News Corp. and Time Inc. — is launching an all-you-can-read magazine subscription app for the iPad Tuesday. For a flat monthly fee of $10 or $15, users can get access to the digital versions of 39 magazines from those publishers, including back issues. The lower-priced plan nets you access to monthlies and bi-weeklies, including Esquire, InStyle, Vanity Fair, Vogue and Wired. The $15 plan includes those magazines plus a small roster of weeklies, including People, Sports Illustrated, The New Yorker and Time. Users can also purchase individual subscriptions as well as single copies. Read the full story at Mashable.