Hi @Jdlrobson If I understand correctly, the wording in the user-notice should be something like:

Some gadgets and user-scripts use the HTML div #jump-to-nav. This div will be removed soon. Maintainers should replace these uses with either #siteSub or #mw-content-text. A list of affected scripts is at the top of phab:T265373.

If that is inaccurate/imperfect, then Please provide a correct version.
I will add it to TechNews tomorrow (Friday) morning (PST) before this issue is frozen for translation, for delivery on Monday.

perfect.

I remember that [[#jump-to-nav]] in the past was also used as an anchor link sometimes instead of [[#top]]. Might be another impact to look out for.

Do the alternate divs exist in other skins, or will scripts that aim to work across multiple skins need to make an existence check? If the latter, can you provide an example code snippet to aid maintainers?

This element was never part of a standard skin spec so the HTML may or may not be in other skins. Right now this has only been removed in Vector. Other skins should not be impacted.

I'd recommend always doing an existence check for any gadget as other gadgets can alter the look and feel of the skin.

Does that answer your question?