According to a email from Nomen nescio aka anonymous Canon is planning to update the following list of lenses, we will add more update soon.
Canon 28mm f1.4
Canon already have the patent of 28mm F1.2 and they Canon will announce a the Lens in near future, keep in mind that 28mm F2.8 IS USM version of the lens announced on 2012 along with 24-70mm lens.
New 50mm Coming
The New 50 means include two version F1.2L and F1.4, new version will sure carry advance optics, better AF mechanism (optimized for video) and Blue Spectrum Refractive Optics first seen on 35mm lens.
Canon EF 85mm f1.2L II USM Lens was announced on Feb 21, 2006, so there is a possibility that Canon may update a 9+ year old lens with Blue Spectrum Refractive Optics and advance AF drive.
The 70-200mm Lens is always a cash cow for Canon, the 70-200mm F2.8 II was announced on 2010 and Canon will soon announce the update of this lens too.
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