Astro* - 1.0 Bender* - 1.1 Cupcake - 1.5 Donut - 1.6 Eclair - 2.0/2.1 Froyo - 2.2 Gingerbread - 2.3.x Honeycomb - 3.0.x Ice Cream Sandwich - 4.0.x Jellybean - 4.1.x Key Lime Pie - ? * = The version system started as robots, and then trademark issues arose so they switched to names of deserts in alphabetical order. Me and a couple of users were debating what was after Jellybean, but then we realized it was already confirmed online as Key Lime Pie, so that argument ended. The next letter is L, so what desserts begin with an L? Lemon Pie, is my only guess.