He starts off by explaining how RIM will be providing developers with various beta BlackBerry 10 SDKs, which will ultimately lead up to the "Gold" BlackBerry 10 SDK sometime down the line. You can tell RIM is trying to get it about as perfect as possible before releasing it to the developers, so as to leave no excuse for someone to not develop for BlackBerry 10.
He was kind enough to share some of the APIs that will be made available to developers in the coming betas:
- PIM (Contacts, Calendar, Tasks, Notes)
- Share/Invoke Framework
- Adding your menu item to an existing app
- Invoking and being invoked by another app
- String pattern registry
- Geocoding & reverse geocoding