Through the Italian forum ‘ArchicadObjects‘, we were able to see some preview clips about the new features of Archicad 15, by Graphisoft.
The new features involve enhanced 3D modelling, including custom reference plane in 3D, enhaced guidelines management, shell tool.
Here’s the clips on youtube. The movies do not specify whether the new release is going beyond what shown in the clips, or when the new Archicad is going to be released.