OS X Mavericks will probably change a lot before release
I remember when Leopard was first previewed it looked pretty much exactly like Tiger still. Now, with our first look at Mavericks, that also still looks almost exactly like Mountain Lion does now.
It would be very strange for Apple to have changed iOS so drastically and then release a brand new version of OS X still with all those original icons and 3D dock. I think we're soon going to see a huge update to Mavericks' icon set and almost certainly a new dock to match the one on iOS. Beyond that, maybe even new radio buttons to replace the aqua traffic lights?
I personally liked the new iOS house style on first sight and I can't wait to see it on my Mac, what are your thoughts? Do you want to see Mavericks get the same Ive treatment before release?