I don't subscribe to NOF, but don't I recall a thread about one of Nick's articles that Penning had been working out with a well renown offensive line guru and the Saints were impressed with his progress?
That is basically correct. Although what Nick said was that reports from non-Saints sources were that he was doing a good job making progress at the camp, not that the Saints were impressed with his progress. The way I see this is the Saints are going to give Penning another shot, but they think Fuaga is their best Tackle so they are going to put him at LT unless or until Penning proves he's a better LT than Fuaga. And, if Penning doesn't show that, Penning will compete for the RT job with Young and Udoh.
But, unless Fuaga shows to be a great LT, he could be moved back to RT next year if they can find someone who is a good LT in the draft or free agency.