Update: The Games with Gold are now available to download, so make sure you go grab your free games.
Original: Microsoft has said that since this July represents two full years since it began giving Gold members access to select games, completely free, as a special thank you to Xbox fans, it's announcing that starting in July, Games with Gold will offer two new games on Xbox One every month.
On Xbox One, Xbox Live Gold members can download Assassin’s Creed IV: Black Flag for free during the month of July. So Many Me will be available as a free download from July 16th to August 15th.
On Xbox 360, starting Wednesday, July 1st, Plants vs. Zombies will be free for Xbox Live Gold members through July 15th. Then on July 16th, Xbox Live Gold Members can download Gears of War 3 for free through July 31st.