We’ve added menu item access key underlines to all menu items in Ribbon for WPF. This update will be in the upcoming WPF Studio 2010.1 release.

Ribbon’s application menu showing underlines for menu items and recent document items
This update doesn’t require any changes to your code in most cases either. What we do is look at the KeyTipAccessText property of the buttons you use for your menu items. If it is a single character and the character is found in the button’s label text, it will underline the character.

A context menu showing the access key underlines
Our algorithm will even give priority to uppercase letters to be underlined so note that in the Save As item above, the uppercase A as underlined instead of the a in Save.
And of course typing an underlined character while a menu is displayed will execute the related menu item.
We hope to launch WPF Studio 2010.1 with these new features and more next week.