What is this new found love?
It is the ability to locate tag placement while Tagging By Category. In previous releases, when tags were placed, you either could choose for it to draw a leader to the tag or accept the default location (which was usually right, smack in the middle of the item you were trying to tag). Then you had the tedious process of moving all the tags to a place where they were actually readable. With Revit 2011, when you choose to tag by category, Revit gives you the opportunity to move the tag right after placing the item, before picking the next item to tag. Revit does this without ending the command so you can continue placing tags on additional items.
I believe this will save time and allow users to place tags in the appropriate location so they are all readable. Even with this nice new feature, there is always room for improvement. It would have been nice for Revit to remember where you have place the tag in adjacency to the item being tagged, and automatically put the next tag in the same place for the next item. Oh well, maybe in 2012?
Below is a quick video showing how this works.
Along with this you can set the sun settings where changes have been made to how you select your project location. Included in the location dialog is a Google Map interface where you can search for your exact location.
As part of the Graphic Display Options, Revit Architecture now offers an option to use Ambient Lighting (or Ambient Occlusion) in 3d views. Ambient occlusion approximates the way light radiates in real life, especially off what are normally considered non-reflective surfaces.
#2 - Temporary Dimension Improvements
And the #1 new feature... 
