The last update ever released for this series was version 9.5.5 on 14 May 2013.
Incorporated features from Acrobat 3D, including the Adobe 3D Reviewer for merging and measuring CAD formats. Adobe acrobat 9 pro extended 9.1 0 update 9.5.2
Acrobat 9 Pro Extended included specialized tools not found in the standard "Pro" version: The last update ever released for this series was version 9