Do you need an feature update of the latest Adobe InDesign releases?

Do you feel that Adobe have released a number of InDesign version, and you do not know if you have missed any new feature? Then I have a great comparison sheet that Rufus Deuchler have created. It presents all new features from CS3 to CS5.5 in InDesign. All features is grouped in different areas and described in detail. Thanks Rufus!

Link: http://rufus.typepad.com/files/adobe-indesign-features-updated.pdf