Hussein over at WinMobile.se got in touch with Brandon Watson via Twitter with regards to LED (flashlight) API support in Mango for developers to use. While fairly obvious, it seems as though developers will not be able to manipulate the LED due to no API being available.

Then again, do we need the API? Microsoft could release a free torch app that would use the LED backlight in favor of "white screen" apps currently available. 

Source: WinMobile.se