For a while now, you may have noticed Google asking if you would like to try the new Forms. The interface is revamped with a new look and supposedly easier to use. I have been hesitant to encourage staff to switch to the new forms because the ability to use Add-Ons was not there yet. For many seasoned Google Forms users this was a huge deficit. Much of the power of Forms comes from how you can control the distribution of the form or manipulate the form submission data with Add-On tools.
I am happy to report that you may make the switch because Add-Ons are now available in the new interface. Try it out. I think you will like the new look and features.
Below are two great articles detailing some recent updates to Google Forms.