As announced at WWDC last month, Apple is making a beta of its newly updated mobile operating system, iOS 9, available to the general public for testing starting today, alongside the beta version of OS X El Capitan, its updated desktop OS. The iOS 9 beta build will allow early adopters to try out upcoming features, including new apps like News and a refreshed Notes, transit directions in Apple Maps, an improved Siri, a smarter search which lets you surface results from inside apps, and much more. Meanwhile, El Capitan offers a variety of improvements to core features like Mission Control, Spotlight, native apps, including Safari, Mail, Maps, Photos, plus performance improvements, and other items. “But wait” you say. “My friend has been running an iOS 9 beta for weeks now!” Perhaps! Up until this point, it’s been available as a developer beta, which meant three things: it’s really only meant for people who need early access to ensure their apps are compatible, it was buggy as