News Corp, Time Inc to unveil digital JV on Tuesday-sources

* Digital newsstand plan to be unveiled on Tuesday

* News Corp, Time, Hearst, Conde Nast part of the plan

NEW YORK Dec 7 (Reuters) - News Corp (NWSA.O), Time Warner Inc (TWX.N) and magazine publishers Conde Nast and Hearst Corp will on Tuesday unveil a new digital joint venture aimed at readying their print titles with agreed standards for a range of devices from e-books to tablets.

The companies will reveal details of a long-expected plan to create a digital newsstand next year that would deliver their titles and content to mobile devices, according to people familiar with the plan.

Users of the service would get a digital newsstand where they could buy subscriptions, potentially by the month or year, these people said.

Time Warner's Time Inc is the largest magazine publisher in the U.S. and like Conde Nast and Hearst has been hurt by sharp decline in print advertising revenue in recent years as readers have moved to online sites for free content.

News Corp's chief executive Rupert Murdoch has in the last year been especially vocal about reversing the tide of free access to content published by his newspapers. He has joined forces with the magazine publishers as part of a number of different initiatives to get paid for Web content, one of the sources said.

The original digital newsstand initiative is being led by Time Inc executive John Squires, who earlier this year was charged with coming up with ways to help Time Inc and its titles such as Time magazine, Sports Illustrated, People and Fortune make money online as the print businesses declines. (Reporting by Yinka Adegoke; editing by Carol Bishopric)