As the older stock is sold off, the new versions will be introduced. I expect them to have a few new applications, including the cone-shaped filters for Ford trucks.
The material used for the base (of some of the planar filters) and the edging for some of the odd-shaped ones is a different material. It will hold in place better with less pressure.
The foam is (far as I can figure) the same as the older models--manufactured in Superior by AMSOIL (well, the A J Amatuzio Filter company).
Far as the testing--standardized, accepted by the industry, but for those who still don't believe anything published by AMSOIL, make up your own mind.