2/3 of the new version is already finished. Of course you are invited as beta tester. But 4.0 will work very different in many cases. So After the last 1/3 of the work is done I have to update the doku. Otherwise testing is very difficult.
If 4.0 is finished I need to update the GUI. 4.0 projects will not be compatibe with the old V-Control version. Also many device drivers will need an update.