We had a lot of great submissions this year for both the Mastering and Essentials covers. But when push came to shove (almost literally :) we selected the above image for this years Mastering cover.
Congrats and thanks to Sean Burke and team over at NBBJ (link) for the cover art for Mastering Revit 2013! Phil Bernstein (link) has graciously agreed to write this years forward and we'll post a link to the PDF as soon as it's availble.
On a personal note - I had the great pleasure of working with Sean Burke (link) for a number of years at Autodesk. Sean's got a great passion for all things BIM, Technology and Sustainability.
But don't let his measured seriousness fool you - he's got a wicked sense of humor as well. ;)
Thanks Phil, Sean and NBBJ!