After an 18 year hiatus, AutoCAD appears to be headed back to the Mac platform, according to screen shots of a new beta posted on an Italian Mac forum.

The screen shots, appearing on Italiamac depict the installation screens and interface for an upcoming Autodesk AutoCAD 64-bit early beta release for Mac OS X called "Sledgehammer."

The last time Autodesk's AutoCAD drafting software was made available for the Mac was in 1992, with Release 12. The current 2011 version, available only for Windows, is designated Release 25.