After long time in CTP, Visual Studio 2012 finally got its second update.
Quite a lot of changes touch agile workflows and this alone will make it worthwhile. Unlike update 1, there are actually quite a few changes related to development so this is definitely update to install.
Update is cumulative so you don't need anything other than base Visual Studio 2012 installation. Go forth and download.
PS: My favorite new feature is grouping of unit tests by class name and possibility to add them in playlists.
PPS: Feature that I wish I had is new Code Map. Unfortunately it is not available on Visual Studio 2012 Professional and below. :(