If you are updating from a previous version you need to reconnect to your Dropbox and Google Drive accounts
This is the new colorfull UI. At the top of the screen there are four buttons; The one on the left of the screen will toggle the bottom bar, increasing the available space. The other two buttons will bring the dialog to passcode protect the application and to read a few info about the application. Finally, if you tap on the logo image you will see the menu that is displayed right below the image. That menu will slide in from the right end of the screen.