CodeGear has published on the fourth of my series of white papers introducing Delphi 2009 and extracted from my book Delphi 2009 Handbook (available in printed form from Titled "Building User Interfaces with Delphi 2009" the white papers covers updates in the VCL, including new controls and extended controls providing specific support for Windows XP and Windows Vista control styles, plus an introduction to the Ribbon control.

As for the past papers, you can find more complete information in the book, from which the white paper was abridged. If you are looking for VCL updates and an introduction to Vista support, you shoudl feret to my Delphi 2007 Handbook, instead.