The Cloudflare post includes graphs depicting how the issue looked downstream and a rough initial timeline for the incident. The Facebook post says basically nothing more than that there was a networking mistake.
I hope we get something more substantial and informative than that over the next couple of weeks, but it doesn't seem (at least from my searching) that Facebook is in the business of publicly posting in-depth post-mortems for their outages, which I personally find unfortunate.
I hope we get something more substantial and informative than that over the next couple of weeks, but it doesn't seem (at least from my searching) that Facebook is in the business of publicly posting in-depth post-mortems for their outages, which I personally find unfortunate.