You can learn all about the next release of Windows Phone, code named "Mango" in Link Removed video- this video is strictly for the devs. Matt Bencke gave us all the 411 on what is to be expected in the Developer Tools that were released TODAY.
Make sure to Link Removed and start developing...
application
background processes
calendar
camera
contactaccess
deep linking
developer tools
emulator
fast switching
ie9
live tiles
mango
network
release
sensors
silverlight
sql server
windows phone
xna
