Seems September’s ES is not totally a new story
Interesting…but from the context of the posts around it, I think this is more a mistake than anything else. The posts revolve around the old SMEN storyline, and those were since removed and archived. Perhaps whatever code number was used to stand in for those has since been re-used for September’s ES, and so those values will return the text of the ES instead of the old SMEN-related texts.
It seems more likely, at least, than spacemarine taking a sudden break from piledriving their character into ruin to quickly echo the text of a completely different not-yet-written story (especially since the title text seems to reference SMEN as well).