Digital Extremes announces TennoCon, an upcoming convention of Warframe players, saying this is one of the largest free-to-play communities in the world. The gathering is scheduled for July 9, 2016 in London, Ontario, Canada. This website has all the details and ticket sales. Word is: "TennoCon offers attendees a chance to connect with the Warframe developers, well-known Warframe Twitch and YouTube broadcasters, and fellow players, better known as Tenno."