Q&A Guidelines?

Being my usual self by having no life (besides waiting for Alm) and scrolling through the questions and stuff I made a weird discovery.
At the top of the Q&A section there're guidelines.
So am I blind and never saw them once or are these new?
And if they are new why did it took so long to write down some guidelines? (not bashing on them, just wondering o.O)
Did something happened in the recent days what I missed that they implemented them?
The only big thing I remember was about a week ago when a guy posted about his gambling addiction, what was a good thing, that's atleast my opinion.