Circle Nov. 14 next week on your calendar; Firefox 57 will be released.
Many of the favorite add-ons FF users have will cease to function in the new release. Very Unfortunately, that include favorites such as No Script, No Google Analytics, and Self Destructing Cookies among others.
U Block Origin and Privacy Badger are not listed as legacy in my FF add-ons, so let's hope they will also function in 57.
Self-Destructing Cookies website says it will not be updated, so no hope there.
No Google Analytics website has no information on an updated version, so that leaves us hanging. Google is probably clapping their hands, now millions of users will add to their tracking list.
In the No Script forum, it is posted that the author is currently working on a FF57 version, no release date is given. Good news
I am not clear if the infamous NID and PREF cookies set by Google and used by the NSA for spying purposes will able to be blocked or not in 57. Will have to wait and see what cookie-control add-ons are offered and what they can be configured to do.
As of Nov.14th, I am not entirely clear if older versions of FF will still function for a period of time. I guess we will have to wait and see.