GML in JPEG2000 supports image annotation

Someone recently asked me if OGC had a standard for imagery annotation. What this basically means is the ability to scribble notes on a map. I told him that we have an old proposal for this called XIMA (XML for Image and Map Annotation) that has never been fully developed, but it turns out there's support for imagery annotation in the new GML for JPEG2000 specification, which I just scanned through. I notice it even pays homage to that old XIMA proposal by using a namespace called "xima" in its image annotation example. Maybe this could be the beginning of a resurrected XIMA effort?