This is welcome news. Accessibility is too often overlooked and it is something that should be at the forefront of everyone's minds when they work with Open Source. WordPress' market share makes it and its community a major influencer and thought leader where moving the web forward is concerned and if we collectively decide to make Accessibility priority #1 then the rest of the web will follow suit.

This move also falls nicely in line with the recent legislation of accessibility standards as a requirement in many European countries. We are moving towards a time when accessibility is a requirement and the sooner we can get in front of that the better.