I just heard from Pat McCarthy of Conversionrater and Right Media that RMX Direct is launching on this Monday (btw, I'll be at the AlwaysOnNYC next Monday-Wednesday also). In fact, you can take a tour of RMX Direct here.
I looked at the case studies and found something right away that was interesting -"…Jonathan likes RMX Direct because it functions as both an auction platform and an ad server. "
I'm not really involved with Paid Advertising that much, although one of the companies I work with, Green Media (whose blog, biggreenblog, I also post to), is a client of Right Media and uses RMX Direct for some of their clients. I also spoke with Pat McCarthy briefly during TechCrunch 8 a couple of months ago.
I'll release the details for the RMX Direct Launch next week. BTW, Right Media has offices here in NYC, at 212, 5th Avenue (not far from where I work, in Chelsea).