The Wall Street Journal has rounded up its cabal of sources today to present another delicious new battlefield in the struggle between Google and Apple for mobile supremacy. Specifically, it reports that the Mountain View team has approached Time Warner, Condé Nast and Hearst -- three of the biggest publishers of periodicals in the US -- with a view to offering their content through a Google-operated "digital newsstand" for Android devices. The appeal for media companies will be an easier route to monetizing their content, apparently, including the possibility that Google could take a smaller slice of revenues than the 30 percent charged by Apple and Amazon . There's also word of developments behind the scenes at Cupertino, where "several changes in iTunes" are expected to improve the publisher's experience of using the service, including making it easier to offer long-term subscriptions and related discounts. Apple's had nothing to say on the matter, while Google's responded by noting it's always in discussions with publishers and has nothing to announce at this point.