The first Developer Preview for Android Things OS was released at the end of 2016, as a lightweight version of Android intended for Internet of Things devices. Since then, it has been updated multiple times to support more hardware and fix bugs, and today Google has released Developer Preview 4.1.
As the minor version change might imply, this isn’t a massive release. The first new feature is support for the Pico i.MX6UL revision B board, with support for earlier revisions (such as those made available to beta testers) being dropped.
Android Things Developer Preview 4.1 is out, with improvements to Play Services and more was written by the awesome team at Android Police.