Eventually the Tamron SP 24-70mm f/2.8 got oficially announced. The Canon mount version will be available from September 2, 2017. Pre-order it ($1,199) at Adorama or B&H Photo.
Tamron press release:
Tamron introduces next-generation high-speed 24-70mm F/2.8 zoom lens with advanced features
Tamron SP 24-70mm F/2.8 Di VC USD G2 (Model A032)
Versatile new lens delivers ultra-high image quality, image stabilization of 5 stopd and superb performance even in backlit scenes
June 30, 2017, Saitama, Japan – Tamron Co., Ltd. (President & CEO: Shiro Ajisaka), a leading manufacturer of optics for diverse applications, announces the launch of a new high-speed zoom lens, SP 24-70mm F/2.8 Di VC USD G2 (Model A032), for full-frame DSLR cameras. Model A032 is a fast F/2.8 zoom that achieves top-level image quality. The new Dual MPU (Micro Processing Units) provide rapid autofocusing with improved accuracy and the highest vibration compensation performance of any lens in its class*2 (CIPA level of 5 stops*1). The use of specialized, high quality glass materials (offering greater optical transmittance) for the lens element assures superior color reproduction and greater sharpness, while the application of Tamron’s exclusive nanotechnology-based eBAND Coating substantially curbs the ghosting and flare that are prone to occur in backlit photography, successfully improving the overall optical performance of the lens. Additionally, model A032 provides the added conveniences of protective Fluorine Coating, Moisture-Resistant Construction and a locking lens hood. Photographers can use this new high-speed zoom lens for wide-ranging purposes, including landscape, portrait, news, travel and many others.