I doubt that Roger Cicala will do additional testing on the 70-200 f/2.8 L IS v. III, because the optical formula is unchanged (although there are some new coatings). He as much said so in a reply to a query on his blog. Because he has a scientific background (opthalmologist, I believe) and common sense understanding of manufacturing variability, he tries to sample at least 5 copies, if not 10 copies, versus the usual lens reviewer's n of 1.