So long as the upgrade is free and it works on your hardware, I'd advise going for it.
Just maybe choose the spring 2019 version instead of the fall 2019 version if you upgrade immediately. Or wait until they get the bugs worked out of the fall 2019 version.
It happens over and over again. Microsoft releases a patch and the world panics. Dire predictions of doom stampede Windows customers into installing patches, then -- poof! -- the threat disappears. Who gets hurt when the industry cries "Wolf!"?