Zuckerberg announced in March that he believes Facebook's future is in private communications. Following a year of privacy-focused scandals, Zuckerberg has been touting the shift to messaging, saying the company will prioritize encryption and user safety.
Zuckerberg's new strategy followed the company's plans to combine its three messaging services, WhatsApp, Instagram and Messenger. F8's schedule includes more than a dozen sessions focused on Messenger, such as, "Deep Dive on Messenger Updates."
Facebook tends to use its developer conference to announce key product releases. Last year, for example, Facebook announced the sale of its Oculus Go virtual-reality headset, a dating feature and a yet-to-be-released feature that would let users erase their data from Facebook.