If you need to manage your files (e.g. delete a file), you can access the File Management workspace by clicking File > File Management. A few key features include:
Files can be deleted by accessing the new "File Management" workspace, and clicking the "Delete file" button.
When opening a file, you can double-click the file as opposed to selecting the file then choosing "open."
Saving files is also easier as the Save button will become enabled when you type in a file name (previously, you had to type in a file name and then click another button to enable the Save button).