I have used the EF 24-105 f4, for four years now and have been pretty satisfied with the IQ. However, after seeing the images shot with the 24-70 f2.8L II, I feel I am missing out on making some great images in those focal lengths.
Having read on this site, that this could be the "year of the lens," I am wondering if I should hold out for a while and see if a new/updated version of the EF 24-105L comes out before purchasing the 24-70. I doubt that any of the new lenses will include an upgraded version of the 24-105L, let alone an f2.8 version of it, but one can only hope! I think I would be happy if they came out with a 24-135L f4, if it had great IQ. Thoughts please! Happy New Year!