Hi Software has just announced that they have released the 1.1 version of Accessibility Kit for SharePoint which addresses collaborative environments. According to the press release posted at the AKS forum the new version of AKS contains 21 new control adapters for various controls used on Blogs and Wikis. These controls are meant to improve the overall accessibility of a web collaboration environment.
I'm really eager to have a look at the toolkit and see the way it works. Stay tuned for more updates!