Since so many years I used to the old Icons. So I was surprised that Cadsoft changed them. But sadly, the new Icons look not good. I don't think they give the user the right message what kind of function is behind the buttons. Of course, there are still the tool tips when you move the mouse over a button.

Here is a comparison beween the new and the old:

If you dont't like, you can change it. In the Schematic or Layout Editor (doesn't matter), go to

Options -> User Interface

Choose "Classic Icon"

I run a German Version of Eagle, so my screenshots are in German, I apologize.