Theres still no official price, but only speculation, so its too early to panic, but even if pricing tag 1300£< , theres one more good option Tamron 24-70mm f2.8 VC. Video took me in to the DSLR 3 years ago, not photo, but after some time photography took place in my hobby at same level.
Canon 24-70mm f4
+ macro capability (I was really considering 100mm f2.8 macro before)
+ 600g (tamron 825g)
+ weather proof and build quality (tamron only dust)
+ hybrid stabilization (good not only for macro option, but also video, thats for me 1st priority)
+ focus and zoom ring should be much better for manual use.
- if! high price tag
~ and image quality still under the question