We haven't switched to FF68 yet, so the patch is not applicable. FF68esr is still in its "testing" phase. As always, we'll switch to it when it gets to 68.2.
Please be aware that due to the number of changes since FF60, it now forces the use of a new profile. Make sure you backup your session somehow before upgrading, if you really need to keep it. For bookmarks you could use Firefox sync, I guess, but for tabs, you should probably need some add-on.