Just a small but simple change to Revit 2011 is the behaviour and display of temporary dimensions. In previous versions of Revit if you repositioned the temporary dimensions but did not make the dimension permanent then Revit reset the dimension to its previous position, very annoying!
This has now been addressed and furthermore you can now change the text size of the temporary dimensions in the Options dialog
Simple but effective!
LawrenceH
Autodesk Revit Structure 