This is an article that showed up at NetworkWorld.com wrote by Andy Patrizio.
http://www.networkworld.com/article/3002180/microsoft-subnet/os-2-is-getting-an-upgrade.html
It has this interesting parragraph.
"We executed our agreement with IBM at the end of September," Rosenthal told me via email. "Throughout the process, I can tell you that our counterparts at IBM were nothing short of enthusiastic and supportive of our efforts."