A few days ago, Autodesk presented a very nice overview of the latest innovations in Revit 2015 - in German and illustrated with lots of screenshots. Unfortunately a little late, as Revit 2015 has been on the market for a few months now, but it's worth taking a look at the technical information - maybe there's a feature or two that you've overlooked so far! Have fun with Revit 2015! 😉
http://www.autodesk.de/adsk/servlet/pc/item?siteID=403786&id=23374268
Image © Autodesk