WOW WEE. What a great added feature.
If you have a zipped file, just double click it.
A menu will open from which you can save individual files to your computer. Just click & drag or copy the file you want and drop it in the desired location. It's that easy!
Also, in the left-hand column there is a link to "Extract all files".
This will open a wizard to guide you through the extraction process. You can choose where you want the files to go, etc.
Go on. Give it a try.