Following Android Alpha and Android Beta, Google has always named its Android OS updates after sweet treats, and in alphabetical order. So far we've had Cupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, Jelly Bean, KitKat, Lollipop, Marshmallow and Nougat.
In 2017 Google will be looking for a sweet treat beginning with O. Team could come up with Oreo, Orange, Oatcake and Oh!
Let us wait and watch for more information about Android next OS.