The big question left was how is KDE going to implement AT-SPI. And two main options are available:

The disadvantage of the first one is the dependencies on Gnome libraries. The whole KDE doesn't have to depend on Gnome libraries but the accessibility libraries/plug ins will depend.

The disadvantage of the second is that the CORBA API will have to be used, which is much more complex than ATK (KDE Accessibility will depend on CORBA).