Instagram Press is the company's official newsroom, posting product announcements and leadership statements, such as IGTV, Threads and founder changes.
HN commenters link it as the primary source for official statements, like the founders' departure, and for feature details such as Stories Archive.
First official statement:
https://instagram-press.com/blog/2018/09/24/statement-from-kevin-systrom-instagram-co-founder-and-ceo/
> We’re planning on taking some time off to explore our curiosity and creativity again. Building new things requires that we step back, understand what inspires us and match that with what the world needs; that’s what we plan to do.
h/t to Bloomberg's @sarahfrier, who also says this:
https://twitter.com/sarahfrier/status/1044419256383729664
> My sources say the Instagram founders are leaving after increased tension with Mark Zuckerberg over the direction of the product. IG culture/priorities very different from FB. See my April story for background
FWIW, Instagram stores Stories, privately to the user, in its "Archive" feature indefinitely.
https://instagram-press.com/blog/2017/12/05/introducing-stories-highlights-and-stories-archive/