The games with gold for July have been announced thanks to MajorNelson . He issued this statement
This July represents two full years since we began giving Gold members access to amazing games, completely free. As a special thank you to our Xbox fans, we’re announcing that starting in July, Games with Gold will offer two new games on Xbox One every month.
So Xbox One fans will be happy that they will now receive two Xbox One games every month!
For the Xbox One, Assassin’s Creed Black Flag will be free during July and So Many me will be available from the 16th July to 15th August.
For the Xbox 360, Plants vs Zombies will be free until July 15th to be replaced by Gears of War 3 on the 16th.
*Titles are available as free downloads for qualifying Xbox Live Gold members in all markets where Xbox Live is available. Some regions may offer different titles depending on market availability.