WAI-ARIA 1.1 and DPUB-ARIA 1.0 in BlueGriffon
I have just added support for WAI-ARIA 1.1 and DPUB-ARIA 1.0 to the trunk of BlueGriffon. The next public version (2.2) will include those changes. In the meantime, a OS X trial version is available from here. You'll find the changes implemented inside the new panel Panels > ARIA.