A check on Adobe blogs suggests there is not much interest in JDF from an everyday point of view. Sorry, still can't work out how to load photos into this blog. I have got Picasa started but it defaults to "wifi exeter", another blog another story. Still,have a look or do your own search.
It is very welcome that Adobe are promoting PDF as part of print at IPEX. However, having said that it is also the case that most of the time Acrobat is promoted for 'knowledge workers' who seem to be imagined as uninterested in hard copy of any kind.
Just mentioning this for consideration by any other bloggers out there.
If you are interested in print, consider getting to IPEX before it closes next week. Chances to get information about print from Adobe through people may not turn up very often.