Google has announced that devices still running Jelly Bean will no longer be supported after a new version is released at the end of August this year.
Google Play Services deprecates Android Jelly Bean support – ZDNET
Google has said that devices still running Jelly Bean will no longer be supported after version 21.30.99, which is due to be released at the end of August. In a blog post, Google said the move was due to the version of Android which was first released in 2012 making up less than of active devices and developers having to spend more time to support it.
Link: Google Play Services deprecates Android Jelly Bean support
via www.zdnet.com