Version Confusion

The Chinese certainly do things differently. Yesterday Chinese CAD vendor ZWCAD Software released ZWCAD 2008, the latest version of their AutoCAD clone with DRX support. But they still sell ZWCAD 2007. And a license of the ZWCAD 2007 comes with a license of ZWCAD 2008. I am not quite sure I understand the point here. If you do, please enlighten me.

In related news, I am sorry to report that the CADopia webmaster has still not woken up.