The Microsoft Windows Build Conference highlights are available online. 

At the Build Windows 8 site you can:Windows 8 Desktop

  1. Watch the keynotes and the individual sessions 
  2. Download the Windows Developer Preview

Go download the Windows Developer Preview and developer tools and start building apps now!

MSDN subscribers can go to the MSDN subscriptions page for additional downloads.  Build attendees can go to the Build attendee Connect site for additional downloads.