Also http://euw.leagueoflegends.com/news/new-free-champion-rotation-season-three-week-9 --- "God forbid we not stare at mithra ass for 6 hours while waiting for our Monk to get a group to punch stuff." - AnguishedTears
According to a post in the week rotation thread on this page; http://na.leagueoflegends.com/board/showthread.php?t=3292882&page=31 Postered: House of Hell Just went to the brazilian page. A red has spoken: "Guys, I was talking with the live people about what happened. It was not an April Fools joke, you can be sure of that. I'll be back with more information!" Then he kept on posting about the issue. Long story short: Riot had mistaken these week's champs with the following week champs. As of now, champs were changed as intended in the brazilian server...they are enjoying Draven and the rest.
Riot dun goofed up the weeks. They fixed it on other servers but not on NA, why idk... They must be aware of the issue, but idk why they haven't stated anything which is annoying as hell. Not a single post about it on the dev tracker for NA forums.