Android L (5.0) is a major update to KitKat 4.4, including the addition of "Material Design," a fully refresh of the controls, notifications, animations and gaming aspects of the firmware.
The developer preview is still in beta, meaning if you want to test it out, you will have to have familiarity with Android dev tools and you have to know that many apps will be broken or crash due to incompatibilities.
Read our early thoughts on Android L here: Google previews Android 'L,' the next evolution of the operating system
If you want to ins all the preview on your N5 or N7, get the instructions here: Developer.android.com
Written by: Andre Yoskowitz @ 26 Jun 2014 22:43