When you're adding a new printer right-click on the top bar with all the buttons, then choose customize (or what ever it's called in english) and add the advanced button.
With that advanced button you kind of get a window like the old one, where you can choose the windows printer via samba.
But there's a problem: when you have to put in a "\" in the adress, it won't work, because when you're adding any letter after the backslash, the "add"-Button (and name gaps and so on) will get disabled.
I hope there's going to be a fix on that, soon. I tried to configure the printers manually with the CUPS webinterface, but still had no luck.