Electronic Arts – using a known third-party service – registered the dot-com domains for Battlefield's 13-20. Fusible took note of the registrations, going on to mention that EA owns most of the Battlefield domains between one and 20 now. Battlefield 4 is expected to launch later this year.

Although the initial instinct may be to call this long-term planning a little overdone, it's not so crazy if Battlefield takes the annualized approach á la an EA Sports title. Battlefield '14 through Battlefield '20 doesn't sound so crazy now.
http://www.joystiq.com/2013/05/08/ba...istered-by-ea/