I am not sure I get the point with another 24-70mm. Then why release the v2 ? Was the IQ of the v1 so bad that it needed such an urgent refresh ? Maybe they could have waited a bit more to release a better product with IS. My guess is that a lot of people who bought the v2 will be highly frustrated when the v3 IS is ready.
Same with the 135mm f2 that is an excellent lens and IMO is not the most urgent need.
On the other end, they still have a few very lousy old lenses (20mm f2.8, 28mm f1.8, 35mm f2, 50mm f2.5 macro, 135mm f2.8 Soft Focus
), the wide angle zooms are not that good (both 17-40mm and 16-35mm), the TS-E 45mm and 90mm NEED the new design with separate controls, the 100-400mm could use a mechanical update, the 400mm 5.6 cries for an IS, there is no excellent wide angle between 14mm and 24mm (the 17mm TS-E is too specialized and expensive for normal use) and so on....
Instead of refining the 4th version of their tele-converters, maybe they should have a COMPLETE range of modern lenses to start with.
I understand they put a lot of emphasis on the big whites since this is big money, but what is honestly the percentage of photographers who can afford a 13,000$ 600mm f4 (aside from some full time specialized pros) ?
Mr. Canon, we have had a lot of refreshes lately, maybe it would be time to surprise us a bit with something really new....