Apple will live stream the WWDC 2013 keynote speech today. It begins at 10AM PDT and will stream on their website and to Apple TV. According to the fine print, the live stream does have some requirements:
Live Streaming video requires Safari 4 or later on Mac OS X v10.6 or later; Safari on iOS 4.2 or later. Streaming via Apple TV requires second- or third-generation Apple TV with software 5.0.2 or later.
The Apple Worldwide Developers Conference includes labs, sessions, and presentations for Apple developers. The keynote can also serve as the platform for big hardware and operating system reveals. Assumedly, Mac OS X 10.9 will be shown off as well as a price and timeline for its availability. Since it is the last in the 10.x line, I’m going to suggest that Apple give it the big cat codename Sabertooth. Mac OS X 10.8 was offered for $19.99 and it is assumed Apple will keep that same price line to encourage quick adoption through upgrades.
iOS 7 may also get some time in the spotlight in this keynote. You can watch the livestream here: http://www.apple.com/apple-events/june-2013/
Between E3 and WWDC, I would expect a full news reader today.