We're strongly considering moving our infrastructure to IAD from ORD - we have 60+ VMs in ORD, and their datacenter is at capacity, to the point that only existing customers can create ORD VMs (and there was that instance a few months back where they couldn't provision new SSD block storage).

I know from their sales that ORD isn't on the OnMetal roadmap for at least 12 months (if at all - I believe "it doesn't appear on our 2014 or 2015 roadmap").