Goldfinger, I do not believe that there was any change. I do not think that the data from these holes has yet been entered into the NI 43-101 model and the model re-released.
Here's a quote from the bottom of the release, in the standard disclaimer and company background section: "Noront is the largest land holder at the Ring of Fire and continues to delineate and prove up its discoveries with NI 43-101 technical and economic reports and an aggressive and well financed drill plan for 2011. "
The NI 43-101 came out last year on April 23rd. Perhaps after a few more months of drilling, we can expect a revised NI 43-101 at roughly the same time this spring, which will incorporate info from all holes completed during this winter's drilling season.