(sorry to thread steal!) How about NA?
So will there be no ranked games while the we are in preseason for like a week or however long it lasts?
So will there be no ranked games while the we are in preseason for like a week or however long it lasts?
Everyone will be able to play ranked games during preseason to get used to the new updates and whatnot, and they will affect your MMR.
This effect will be lessened by a soft reset between Preseason 4 and Season 4, though.
Here's a pretty decent Reddit post with a lot of Rioter comments explaining some things about Season 4 and the ranked system.

