Firefox to Discontinue Sideloaded Extensions
This seems to be somewhat badly written copy on Mozilla's part. To clear up what this change actually means for an end user:- You can still manually install extensions. From now on, all installations will need explicit user confirmation.- No extensions can be installed silently. This is what sideloading did, all extensions in a special folder were installed in all Firefox instances on the computer without the user's consent.This is most definitely a Good Thing, as it means for example no malicious extensions can be silently installed by malware etc. Communicating this change could've been done better, though.