As you all know that the on going Android version is KitKat and so the next version will be something starting from L.
As Google has not yet finalised the name yet so L will be the place holder for the latest Google Android version, as declared by Google itself in it's Google I/O 2014 event.
[Android L preview on Galaxy S5]
Android L has not yet been released publicly but OEMs have early access to the source code.
Thanks to SamMobile to get the hands on an early Android L – LRW58J – test build for the Samsung Galaxy S5 (SM-G900F) and release this publicly.
You will not get much out of it if you had never seen a Galaxy S5 KitKat version.
But still some of the things are clearly notifiable like the lock screen, recent app drawer and the overall UI.
[Android L preview on Galaxy S5]
ALSO SEE: Galaxy A5 LEAKED pictures
Source:
SamMobile
Stay tuned to get more updates.