What's up with the delayed tweet?

(Wanted to post the day of the tweet but had reached my new user threshold). Original message follows.

Today’s tweet from @github talks about the redesign of GitHub Community (i.e. switching to Discord), and even links to it:

However, that happened on May 27.

Why tweet after a month? Did @github mean to tweet about the GitHub repo redesign? That’s what most (if not all) replies to that tweet seem to assume.