Look out! It is a whole new and old CRM world!
Take a huge amount of depth and years of development (Dynamics CRM v2011) and add onto it a whole new way of working. Shake out a few of the old features, park a couple of items for just a bit and add some much very cool new. Now mix well, test and release.
Oh and hold onto your hat, because although change is constant it always has an impact.