As you’re probably aware
WCAG 2.0 are now the ‘official’ guidelines for accessibility, WCAG 1.0 is no more.
The major benefit to us, the developers, is that things don’t need to work when JavaScript is disabled – however ALL dynamic content needs to be accessible and understandable by assistive technologies. Also, your SEO friends will still want all the site content to be available without JavaScript so that the spiders can crawl all over it.
The major draw back, in my opinion, is that there is one requirement that will trip us up every time. This requirement is for video content to have synchronised captions, in
WebAIM's words:
“Synchronized captions are provided for non-live, web-based video (YouTube videos, etc.)”
Unfortunately I can’t see us being able to convince the majority of our clients to go to this effort so there goes our Single A rating!