Canon is expected to announce the Rebel SL2 camera and two lenses on August 14, 2015. Although they are expected to announce the EOS-5D Mk IV and EOS-1D X Mk II cameras later this year or early 2016, I would be 'shocked' if it turns out to be either one. My feeling is Canon will wait till Nikon announces their D5 camera first before making a move.
The EF-35mm f/1.4L II plus a EF or EF-M lens may accompany the announcement. Keep checking back for the latest news and development.