The Mini Toolbars now appear in most of the feature tools within Inventor and you now have access to more Options within the Mini Toolbar itself. Alongside this update has been the addition of enhanced previewing when you are adding a feature such as Holes and Fillets. You will now notice that you get a real time preview, which you can interact with.
The old dialogues are still around, incase there is something you cannot find on the Mini Toolbar. However, these can be minimised to save screen space.