Home version used to follow the format 4.x.x. Some users complained that this numbering scheme can be confused with Android's actual release numbers. For example, Android's JellyBean is 4.1.2, but as a matter of fact, YouWave Home 4.1.2 uses Android 4.0.4.
We listen to our users and have changed the numbering scheme. The number "4" is removed. Home version Home 1.3 was released yesterday. It is a release after 4.1.2.