Well "no harm, no foul" as we say in English, though I'm not sure it can be translated to German. Maybe "Hilft nix, schadet nix"?
On the other hand Jürgen is right that it doesn't really fit the subject of this forum, and while the product may be interesting, there would be more discussion if it was posted in one of the other general purpose tank forums (RC Universe, RC Tank Warfare, RC Modellbau, etc).
I was unable to find any instructions or information on this new board. I sometimes wonder if the Chinese have gotten around yet to copying portions of the Open Panzer firmware, since it would be very easy to do. What would be interesting, and also very relevant to this forum, is if we ever found a Chinese board that seemed to have done so, and especially if they released a board with an ATmega processor. In that case it would be possible for us to hack it, and from a hardware point of view, they would probably make something even better than the TCB (given they are likely to include drive motor control and sound all in one board).
For some companies, having the Chinese clone their products is not a happy event, but in the cae of the Open Panzer project it would be welcomed, since otherwise we have no access to hardware. So far I have not seen such a thing, but if anyone notices one please let us know!