I think he was referring to the frame itself as the latest version is the 4th generation.
http://downeastinc.com/Products.php/?Link=1603
http://www.eagleindustries.com/product.php?productid=140
I guess I need to do some research? Both those links look like the MOLLE 2 frame to me. As far as I know the current generation of MOLLE (gen 4 as you say) doesn't use it or any external frame. I'm not all that up to date on MOLLE though.