The Android operating system (the software that runs the tablet) is regularly updated. Different versions get different version numbers. For instance, version 2.2, version 4.1, etc. Different versions also get names as well as numbers. The version of Android that runs on this tablet is named Ice Cream Sandwich. Other popular names you may encounter include Jelly Bean. I believe all versions may be named after edibles.
Android operating system refers to each new generation or version in the form of dessert treats. like windows names each new version differently like windows XP, Vista, 8. So goes Android Gingerbread, Ice Cream sandwich, Jelly Bean, and "Kit Kat" being the newest
Since April 2009, Android versions have been developed under a codename and released according to alphabetical order: Cupcake (1.5), Donut (1.6), Eclair (2.0–2.1), Froyo (2.2–2.2.3), Gingerbread (2.3–2.3.7), Honeycomb (3.0–3.2.6), Ice Cream Sandwich (4.0–4.0.4), Jelly Bean (4.1–4.3), and KitKat (4.4). On 3 September 2013, Google announced that 1 billion activated devices now use the Android OS worldwide. The most recent major Android update was KitKat 4.4, which was released to commercial devices on 22 November 2013, via an OTA update.
On 31 October 2013, Google released Jelly Bean's successor as Android 4.4, KitKat.
Icecream sandwich is the android operating system before the new jellybean, they all are named after deserts. Operating System Version: Android 4.1 is jellybean not the newest but newer than icecream.