According to two sources I've read, Shailagh Murray in the Washington Post online chat (she's with the Obama campaign in PA today), and TPM, the Obama campaign denies a wholesale endorsement from the NC delegation is in the works.  Here's the TPM story:

http://tpmelectioncentral.talkingpointsm emo.com/2008/03/obama_campaign_denies_th ey_hav.php

But the Obama campaign says it just isn't so. Obama aides say that the only House member to signal support for Obama, either publicly or privately, is G.K. Butterfield. Obama spokesperson Josh Earnest emails over this:

   "We're pleased to have the support of Rep. Butterfield and are working to earn the endorsement of his colleagues in the NC Congressional delegation. Despite the Wall Street Journal's optimism, none of them has told our campaign that they are ready to announce their endorsement of Senator Obama -- so we'll keep working on it."

It's possible, of course, that some of them signaled that they would be supporting him but weren't ready to announce it yet. Also, the Obama campaign has good reason to tamp down such talk right now -- it would be a far more powerful statement if such a thing were to happen after Obama's expected loss in Pennsylvania, as it would signal that the loss hadn't slowed Obama's momentum.

Keep in mind, though, that the Obama campaign recently denied another similar rumor -- the idea that a bloc of 50 super-dels were ready to bolt in his direction en masse -- and that didn't end up happening, either.