The rumored Canon EF 24-70mm f/2.8L IS USM lens is currently in development. According to CR, Canon is still working on this lens. The release date of this lens is currently unknown, could be announced in late 2017 to 2018.
Along with C-Log feature for Canon EOS 5D Mark IV, Canon today also announced a new telephoto zoom cinema lens for Canon Cinema EOS camera, this lens is Canon CN-E 70-200mm T4.4 L IS KAS S Lens, the US price for this lens is $5,225.00, will be shipping in August, 2017.
After announcement of new EF-S 35mm f/2.8 Macro IS STM lens, next lens from Canon will be a full frame lens, the EF 85mm f/1.4L IS USM lens. This lens has rumored for a long time, according to CR, this lens will be officially announced in late Q2 to early Q3 of 2017.
French website Focus Numerique recently had a chance to interview with Canon executive at the Utsunomiya L lens factory in Japan, they said that Canon is currently working on a new technology for lenses.