The changes include-
1. Being able to click on the object - Incoming would only allow "hovering," when you wanted to work with an item in your "Incoming" folder.
2. Being able to drag an item directly into a folder that is on your Google "My Drive."
3. Being able to select multiple items at one time. You can do this on a mac by holding down the command key. This used to be an option in the old drive, because you could select with check boxes. I say, "Welcome Back!" to this feature.
Check out these changes in Google Drive.