Feature summary (what you would like to be able to do and where):
aria-current is an ARIA property that denotes that a link links to the current page. While sighted users can easily get this info from observing the page, screen reader users can benefit from this information being exposed on links in the navigation so they would not, for example, go to the same page twice without knowing it.
[aria-current="page"] on the link that corresponds to the current document would provide assistance to screen reader users and a potential skinning choice for skin authors that are interested in highlighting the current document link in some way or another with CSS.
Tests with screen readers need to be made on whether aria-current="page" gets translated into other languages appropriately (so it does not say Aktuelle Page in German NVDA, for example). If it does not get translated, something like aria-current="true" is also better than nothing.

