Canon 28mm f/1.4 Lens
Canon has already filed a patent for the Canon 28mm f/1.4L Lens, it is highly likely that Canon will announce the new 28mm lens in the near future. Currently, Canon has two 28mm lenses: 28mm f1.8 USM and 28mm f2.8 IS USM. Both of the two lenses are several years old, so it is time for Canon to update the 28mm lens.
New Canon 50mm Lens (See the previous report)
Canon is rumored to announce a new 50mm lens in the near future, the aperture of this new 50mm lens is still unknown. Canon already announced the new EF 50mm f/1.8 STM lens last year, so this year they may update the 30+ year old EF 50mm f/1.4 lens, or the current EF 50mm f/1.2L.
New Canon 85mm Lens
The Canon EF 85mm f1.2L II USM was announced in 2006, it has been 9+ years, so Canon will probably update this 85mm lens first with Blue Spectrum Refractive Optics and advance AF drive.
New Canon 70-200mm Lens
The Canon 70-200mm f2.8 II lens is very popular, which was announced in 2010 and it is always a cash cow for Canon. I believe canon will soon update this 70-200mm lens.
Read more: Canon Rumors
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