Known Issues are what Blogger defines as "The latest on what's still a problem, what's getting fixed, and what's been taken care of, direct from the Blogger team."
I'm not sure how they find this all out based on my prior post.
Known Issues is actually a blog that Blogger uses to update users on potential problems. When they post something, it will appear on your dashboard after you sign in. You can then refer to the known issues blog for updates.