Different versions of android

The following are the different versions of Android released/yet to be

Android 1.5: Cupcake
Android 1.6: Donut
Android 2.0: Eclair
Android 2.2: Froyo
Android 2.3: Gingerbread
Android 3.0: Honeycomb
Android 4.0: Ice Cream Sandwich
Android 4.1: Jelly Bean
Android 4.2: Jelly Bean
Android 4.3: Jelly Bean
Android 4.4: KitKat
Android 5.0: Key Lime Pie