Found the Apple live stream URL

gistfile1.md

1. Open http://www.apple.com/live/ which redirect to something like http://www.apple.com/live/2015-june-event/
2. Find a loaded script like: /live/2015-june-event/scripts/2015-june-event.built.js
3. Open this script and search p.events-delivery.apple.com.edgesuite.net You find something like http://p.events-delivery.apple.com.edgesuite.net/15pijbnaefvpoijbaefvpihb06/js_files/event
4. append to it /url.json (details: host + path + url.json)
5. Open the generated URL
6. Found an URL like http://p.events-delivery.apple.com.edgesuite.net/15pijbnaefvpoijbaefvpihb06/m3u8/hls_mvp.m3u8

Now you can watch it in VLC or any other videoplayer that support M3U and MP4(H264+AAC)!

Previous Apple's website:

1. [...]
2. Find a loaded script like: http://p.events-delivery.apple.com.edgesuite.net/15pijbnaefvpoijbaefvpihb06/js_files/event/url.js
3. Grab the correct URL

It's works only with supported browsers (which support HTTP Live Streaming natively or via a plugin like Quicktimes)

This no longer works, as they have switched to Akamai.

Follow-up: based on your instructions for the second website (and also noting that every year the stream URL grows by two characters, the stream URL could be either https://p-events-delivery.akamaized.net/3004uhggjsaqvcdnqxgthmqqrbejhxytzxcd/m3u8/hls_mvp.m3u8 or https://p-events-delivery.akamaized.net/193004uhggjsaqvcdnqxgthmqqrbejhxytzxcd06/m3u8/hls_mvp.m3u8