Canon may be ready to announce a new 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, I would be surprised it turns out to be either one. My feeling is Canon will wait till Nikon announces their D5 camera first before making a move.
My guess is probably the announcement may be the EOS Rebel SL2 camera and perhaps the EF-35mm f/1.4L II plus a EF or EF-S lens. Keep checking back for the latest news and development.