So the answer is, Join or Die Edition Cover is in English
http://www.youtube.com/watch?v=6KWGBh8I5Hw
The paper cover is in front in english too and backcover is in Czech. The Extras are as the cover of the game in English, but it is with pictures and nicelly printed so you will understand even if you wont to
Anyway, PS3 and Xbox editions are in English totally. And Freedom edition have only a czech paper in backcover, which can be removed. Inside are same as in Join or Die edition Czech bonus paper witch codes and game with Czech cover.
PS3 and Xbox have everything in English