Is there a reason that the client download isn't updated to the current version?
Every month (12 times a year) there is a new festival. Every 6- 8months there is an expansion. Multiple fixes per year as well. Because of the way techies handle those changes is with a "patch". It seems easier to them, even if more cumbersome for us, to just lay each update on top of the last one, and so it requires a version update monthly. Since software isn't as easy to change as say, replumbing the brake lines on your car, I kinda get that. It is what it is. One line of code refers to another one that is buried way back somewhere. Changing one line of old code runs the risk of screwing up multitudes of interdependent lines.