Android L has been in beta for some time now and Google developers have just confirmed that the current Developer Preview which has many bugs and issues won’t receive any updates until final release. Android L is currently available on the Nexus 5 and Nexus 7 (guide on How to install it on the Nexus 4 can be found here and on the Nexus 7 (2012) edition here) will become available on supported devices later this year.
Many users have complained about the amount of bugs in the beta has and all though it is just a beta (where bugs are expected), many developers have pointed out how Apple handles its iOS beta’s which brings almost monthly updates in which bugs are fixed and additional changes are made. Since Google doesn’t show what the final version of Android L might look like or work, by the time developers have adapted their app to the new platform they might have to do lots of more changes to make it compatible and working with the final Android L version
The announcement was made during a Google Android L developer preview video staring Rich Hyndman: