Gaming execs: Join 180 select leaders from King, Glu, Rovio, Unity, Facebook, and more to plan your path to global domination in 2015. GamesBeat Summit is invite-only -- apply here. Ticket prices increase on April 3rd! WhatsApp’s much-mooted move to support voice-calls is nearing completion, as news emerges that anyone on Android can now make calls in-app to other WhatsApp users.