If you are currently using a legitimate copy of CS6, here are the major tools and "new" features that defined that version: Adobe InDesign CS6: What's New? - Rocky Mountain Training
Liquid Layout: Automatically adapts page content when changing the orientation or size of a document. indesign cs6 portable new
PDF Forms: Built-in tools for creating interactive PDF forms without needing Acrobat. If you are currently using a legitimate copy