Group-Office 4.0 beta ready

It has taken a little bit longer then anticipated, but Group-Office 4.0 has finally been released!

You can download the Open-Source version at Sourceforge here:

https://sourceforge.net/projects/group-office/files/4.0/

If you use the Professional version, the 4.0 upgrade will be added to your existing 3.7 license within the next couple of days if you still have support on it.