The chief executive is rolling out the first in a series of changes: Facebook unveiled a redesign of its mobile app and desktop site. Facebook is adding a Groups tab to its main mobile app and desktop menus, for example. With the changes, users can more easily message one another and share news and other items with members of private groups on the site, the company said. WhatsApp and Messenger will be integrated and encrypted. People will be able to post updates that disappear after 24 hours.
Facebook will have a stark white look. “By far, the three fastest-growing areas of online communication are private messaging, groups and Stories,” Mr. Zuckerberg said. He also said Facebook plans to roll out dozens of small product updates across its four main apps of WhatsApp, Instagram, Messenger and Facebook itself. plans to roll out its Dating feature to more than a dozen new countries, such as Thailand and Canada; the service is not available in the United States. The Marketplace will integrate shipping and payment capabilities for the first time. However, closed groups and encrypted services will make it more difficult to identify and root out dangerous or abusive behavior, Mr. Zuckerberg assumed.