Since I am an Android operated devices user, I'm a bit curious on the versions Android had produced. I would just like to share little information on those versions.
Android Cupcake 1.5
Android Donut 1.6
Android Eclair 2.0 and 2.1
Android Froyo 2.2 - 2.2.3
Android Gingerbread 2.3 - 2.3.7
Android Honeycomb 3.0 -3.2.6
Android Ice Cream Sandwich 4.0 - 4.0.4
Android Jelly Bean 4.1 - 4.3.1
Android KitKat 4.4–4.4.4, 4.4W–4.4W.2
Android Lollipop 5.0 - 5.1.1
The most recently updated version is the Android 5.0 Lollipop, which is released on November 3, 2014. Android 6.0 Marshmallow is an upcoming updated version which finshed its third and final preview on August 17, 2015 and said to be relased on October 5.
Any additional information about Android versions is appreaciated.