FORTUNE -- The full keynote in which Microsoft (MSFT) gave its developers "the details they need to know" lasts nearly two hours. But the executive briefing is Joe Belfiore's 60 minute presentation that starts at the 6 minute mark.
Most press reports highlight the key hardware features -- support for multi-core processors, MicroSD chips, near field communications, higher resolution screens, etc.
But MORERead more: Video Wednesdays unveiling of Windows Phone 8