The only button that I don't have on the wheel is the adaptive cc button. Before my software update I hit the Set button or any of the other buttons and they were only used to change the speed limit setting. There wasn't an option for CC. If I press the button with the car symbol on it now, I can see there is an option to enable speed limit and also cc.
I also notice today that I can now also change the driving profile to sport, eco, normal etc.
The dealer was right, it's a huge software update and it took a couple of hours apparently.