I believe Overwatch esports has always operated on 1 patch behind the current game so it's nothing now.
It's good that there's time between patch going live and it being in the esports scene. Gives teams time to find the new meta, practice and refine it. If they dealt with it as soon as it came out like we do then I believe we'd have a bunch of sloppy matches for awhile, until the new meta has been practiced.