Canon is confusing me..
Why would they make the 24-70 f4?
The 24-105 has no rivals…and if they ever discontinue that, it would be a waste..they should improve it and release a ver 2.
The 24-70 f4 is supposed to be a 6D kit and if it's alot better than the 24-105, then why would anyone buy a 5D3 kit with the 25-105 then?
Whatever the price, the 2.8 version is at least 2x more expensive…i hope this brings down the price of the 2.8 version.
I really can't understand Canon's logic with this new lens…then maybe the new 5D3 will also come with this kit and it will be more expensive than the 24-105kit 
Good enough reason to make more $$
Smaller + Lighter, that's the way Canon is moving
Well that's all relative, the 24-70mm will be 10% lighter than the 24-105mm for 25% focal loss, the ratio is not very favorable to the new one. 35mm f2 IS is 335g when the old 35mm EF was 210g, that's a 50% weight increase, so far for the smaller + lighter.
We are not even talking about price here the new 24-70mm being 50% more expensive than the 24-105mm.
The 35mm f2 EF "old" is sold in Europe for 245 Euro, the 35mm IS is announced at 850 Euro, thats more than 3 times the price !!! Thats the most expensive IS + USM upgrade ever sold. For the price, the lens HAS to be a killer.
To add about the macro function, it's to see in real life :
1 - The macro function is a step back to zooms from the 1980s, where you had to lock the zoom on the longest focal before you can focus closer.
2 - Macro performance is not only about focusing closer, it's as well about field curvature (among other). Let's wait and see how flat is the field, since in my experience, strong field curvature on zoom can ruin macro capabilities.
