The Review Has Been Posted
I took the new 70-300L on safari with me and really fell in love with the lens.
I tried to point out a few things that may annoy some people, most things were small issues.
I updated the review to let you know the Kenko Pro 300 DGX 1.4 teleconverter will work on the lens.
Another point of view
Acclaimed photographer Eric Meola gives some brief thoughts on the new 70-300L as well.