Catch the keynote live (provided you meet some pretty Apple-centric requirements—see below). No one but Tim Cook and his inner circle ever know for sure what’s going to be announced at such things, but today’s event is strongly rumored to herald the introduction of a new Apple iPhone.
If you aren’t able to watch the livestream, plenty of tech sites are liveblogging the event. Here are a few links:
Requirements: Live streaming uses Apple’s HTTP Live Streaming (HLS) technology. HLS requires an iPhone, iPad, or iPod touch with Safari on iOS 7.0 or later, a Mac with Safari 6.0.5 or later on OS X v10.8.5 or later, or a PC with Microsoft Edge on Windows 10. Streaming via Apple TV requires an Apple TV (2nd or 3rd generation) with software 6.2 or later or an Apple TV (4th generation).