The Revit blogosphere is alive with posts about Update 2 for Revit Architecture 2012.
Before You Download
Please read before downloading and installing: Service Pack Readme (htm – 86Kb)
 Service Pack Readme (htm – 86Kb)
Get Started
Read all instructions above then click the following links to download.
 Autodesk_Revit_Architecture_2012-x86_Update-2 (exe – 250 MB)
  Autodesk_Revit_Architecture_2012-x86_Update-2 (exe – 250 MB) 
 Autodesk_Revit_Architecture_2012-x64_Update-2 (exe – 280 MB)
  Autodesk_Revit_Architecture_2012-x64_Update-2 (exe – 280 MB) 
Note: The update release can be applied to both the standalone and suite versions of Autodesk Revit Architecture 2012.
Above links and content are via:
Autodesk – Autodesk Revit Architecture Services & Support – Autodesk� Revit� Architecture 2012—English
I first heard about this update from the Revit Forum twitter feed:
Munkholm (RevitForum) on Twitter
 
			













Hey Luke,
Thanks for posting these actual files. It seems that Autodesk changed their links recently, and the Update 2 files for Revit 2012 are no longer to be found. All the links that Autodesk shared for the update seem to be broken now.
-TC