While I appreciate your optimism, the fact that they call the ending "What she (Karlach) deserves" does sound very final.
I know, it does sound final, but I can't help but feel with the various different wording regarding it, like 'Adding a new optional ending' and 'Additional scene to conclude the ending in which Karlach-', there's something lost in translation. It makes it confusing, so I do believe it's not quite that finished.
