This is a first impression "hot" - it is rather good

Easy installation, and (this is new) not too SHIFT to launch after the installation (a good sign for once - with a pure Microsoft product)
Goodies: Good general ergonomics, intuitive enough - the "ribbon" a little surprising but it seems more practical to use (rather than pallets cluttering the entire space); I have not yet seen the "Drawing" toolbar in Word (but I have not yet inserted objects) - In Excel charts are easier to create.
Cons: it is not very easy (especially in Word) to leave the formatting (WordArt styles ...) proposed to modify at will ...
In short an interesting product and expected, it deserves to spend not (surely one wins more than the previous update)