I'm aware that there was a blog announcing the reputation change, but I only just came across the meta post. I was surprised to see it on the SO meta rather than here because it affects all SE sites.
I did search the post, but only found a comment speculating why it was posted there:
I see why they made this into a banner and a blog post, instead of a post in meta.stackexchange.com : they knew we wouldn't like it, and we can't downvote blog posts into oblivion. – Ismael Miguel yesterday
Is that really the reason why it wasn't posted on this meta site? If not, then why? Is there a new policy to make announcements in these blogs from now on?