If you are architect or engineering and using Mac as Operating System, AutoDesk developer behind AutoCAD has been released AutoCAD 2011 for Mac. From TUAW reported that AutoCAD 2011 for MAc is available for purchase right now.
Please note AutoCAD 2011 for Mac application isn’t cheap the MSRP for the software is US$3,995. for me this is expensive applications. TUAW reported
Several designers I have talked to are thrilled about the availability of the Mac edition of AutoCAD, as it takes advantage of the features of Mac OS X and the Mac hardware, but uses the native DWG file format for cross-platform compatibility. AutoCAD for Mac also features integration with the free AutoCAD WS app for the iPhone and iPad.
For more details and how to get and Download AutoCAD 2011 for Mac you can go to Autodesk official site you can request Trial before you buy it