Versions 1.0 and 1.1 were not released under specific code names, although Android 1.1 was unofficially known as Petit Four. Android code names are confectionery - themed and have been in alphabetical order since 2009 's Android 1.5 Cupcake. The most recent version of Android is Android 9 Pie, which was released in August 2018.
what is the latest operating system for android
Android 9 Pie