I feel that rich text is sadly something our trade has mostly just given up on. What's in vogue? Still HTML, which is IMO a really really sad state of affairs, since there's basically no way you can cleanly map between HTML and a wysiwyg editor. The simple question of "where is the cursor?" is almost impossible to answer in the general case.
It's certainly good to see some development. I remain skeptical however, until we have an OSS editor available for production use that internally maps (and requires storage) to a sane data model (!=HTML).