I was going to flag a question and noticed that the flagging reasons have changed radically since yesterday.
Was this discussed at some point because I can't find anything in meta about it.
It changed last night. I'm not going to go in to all of the details, but take a look at the blog post, http://blog.stackoverflow.com/2013/06/the-war-of-the-closes/
While the topic did not read like an announcement, the changes were mentioned in What should be our Off-Topic reasons?.