Android Honeycomb might be Gingerbread's successor, will be marked 3.x13
The ubiquitous “multiple sources” have cited Honeycomb as the next iteration of Google's mobile OS. While Gingerbread aims to completely revamp the user interface, Android 3.x (Honeycomb) will be more of a minor update, the way 2.1 followed 2.0 (Éclair).
Google used to say that only the major releases will have sweet-sounding names, and minor releases will come with plain numbers, but they strayed away with 2.2 by naming it Froyo. We wouldn't call Android 2.2 insignificant update given what it brought to the table, so we have high hopes for Honeycomb - if only we knew what Gingerbread will be. We sincerely hope Google will slow down with those releases after Android 3.0, as it promised, since we are getting sugar-rushed every two or three months now, this can't be good for our health.
source: TechRadar via IntoMobile