Niko is correct. I recently revised the list to track what products are not yet available in POD with the italicized products also not being available in PDF.
Today we have a free 3.5 Eberron adventure which, I think, is an excerpt from a larger book. I'm not very familiar with Eberron products so I'm not sure where this comes from.
The Forgotten Forge
I updated the first post to list all of the products that are not yet available in POD, with products that aren't available in PDF either being italicized.