1. Another developer has compiled the latest launchers from Google - search for "Digital Cookies" in the play store.
2. Apex Launcher
Google''s launcher from Android 4.1 Jellybean, available for you, good gentleperson, right here, right now. No ads. No catches.
WHY DO I HAVE TO CHOOSE THE WIDGETS TWICE?!
Unfortunately it has to be this way. Sorry. It is due to Google cheating slightly with widget security.
I previously said that it "will likely never be fixed by Google, ''cause it doesn''t affect them". Well I guess I have to eat my words because in Android 4.1 they fixed it! If you run this app on Android 4.1 it won''t ask you to pick your widgets twice. Whether you''ll actually ever get Android 4.1 is a-whole-nother story.
Oh yeah, also please don''t rate it low because it doesn''t have many features. That is kind of the point - it has exactly the same features as in the stock app. If you want more, check out Apex Launcher. :-)
If you want ICS icons, install ICS apps! The launcher does not decide the icons.