WRAL is reporting RDU is being delayed (or at least not prioritized) for NV updates.
http://wraltechwire.com/business/tech_wire/opinion/blogpost/11546821/
Does this jive with what you've heard, or is it wrong information? The running list here says RDU is due for launch in December.
I think this story is a little wrong (they asked for a comment from a Sprint CSR; apparently by chat, not an official PR spokesperson).