Looking for the AutoCAD 2011 docs in PDF format?  The search is over, as they are now on Autodesk.com.  You can find the PDF docs from the landing page of the AutoCAD 2011 Online Help.  Under the Online Resources section, located on the right-side of the page, click Help PDFs.  You can also access the PDFs directly by clicking the following URL:

http://docs.autodesk.com/ACD/2011/ENU/pdfs/PDF%20Documentation.html

Note: The Command Reference Guide has not been posted yet, but should be posted early next week.  I will update the blog posting once the page has been updated. 

Sincerely,
  Lee