The patch is upgrading to InDesign CC, which requires an Adobe Creative Cloud subscription. Sorry.
There is no Acrobat CS6. The last version is Acrobat XI which was created too late to include support for Retina Display. It will probably be in the next version of Acrobat.
Creating "patches" for Retina Display are much more engineering intensive than you would expect. In the case of InDesign, it had to be completed in the context of moving to becoming a 64 bit application and moving application development from Carbon to Cocoa (a required move on the Mac accomplished finally in InDesign CC).