Well, first of all it's very fast, super duper fast.
Secondly, and this is our take away, Google is trying to predict exactly what you're searching for.
This is *very* interesting for all of us who have spent months and years targeting two word main keywords.
Now folks will be able to just hover over or press the down hour on one of Google's predicted or suggested words (almost always long tail variation of your main keyword).
So, will people hover over them, click on them or just press enter as usual, the main keyword results are already being shown below when they start typing.