It should be new full-frame-many-megapixel cameras, of course...
And in addition to them Canon should launch new ultra fast prime lenses. Say, XL-serie (eXtra Luxury) with a white ring on it instead red one on L-serie. All of the XL-lenses should be f/1,0 and not less. The Holy Trinity should be relaunched in a new reincarnation:
EF 35mm f/1,0 XL USM,
EF 85mm f/1,0 XL USM and
EF 135mm f/1,0 XL USM
They would be expensive but real Canonguys will be fond of them
Money doesn't matter if one can buy EF 85mm f/1,0 XL!