CADian Soft recently announced an updated version of CADian 2017 which includes fixes and important updates. CADian, based on IntelliCAD, works with .dwg files and is designed for architects, engineers, designers, and anyone who wants to work with CAD drawings.
The newest CADian 2017 version is 3.1.12.
For details about CADian Soft products, see http://www.cadian.com/.
For details about downloading the CADian 2017 patch release, see https://www.cadian.com/english/notice/content.asp?idx=259&page=1.