It's hopefully not a secret anymore that Google likes to name Android releases after desserts. And while that wasn't true right from the beginning, so far we have had Cupcake, Donut, Eclair, Frozen Yogurt (FroYo), Gingerbread, Honeycomb, and most recently Ice Cream Sandwich (Android 4.0). That's still the latest version of the operating system, yet it's quite clear that Google will have a new one out later this year.
Unwired View
See also:
digitalhouse, Next Android versions to be named Jelly Bean and Key Lime Pie