Patent 2012-247687 is for a new full frame 16-35mm f/2.8 VR lens with 5 aspherical surfaces and 3 ED elements (the current 16-35mm f/4 lens has 3 aspherical surfaces and 2 ED elements).
Patent 2012-252177 is for a dual lens hood – basically a smaller hood will be placed inside the regular lens hood in order to further reduce flare.
