The newest Wusthof Knives now have a 15 degree bevel and Henkel's is going to a 12 degree bevel to compete with Shun and other Asian produced knives. If you own older knives you are fine with the stones and sharpeners previously produced.
If you are purchasing knives produced in the past few months you are going to have to adjust. Wusthof does have a pull through sharpener designed for the 15 degree sharpener, it red and marked with an Asian stamp. For the sharper 12 degree angle you are going to have to adjust. I don't know of any simple pull through except one being marked by Wusthof dubbed 'Universal which can be used with either edge.