Ryan Mense (Fstoppers) posted a first hands-on review of the new 70-300mm FE lens:
All in all, I think this lens is best suited for the landscape and travel photographer and can see quite a few of them dropping their current FE 70-200mm f/4 to pick up this lens for the extended reach. For action, wildlife, and wedding photographers, the sharpness and autofocus capabilities are there, but I think you’ll have to dig in a bit to see if it’s a good pairing for your particular style.
FE 50mm f/1.8 at BHphoto. Amazon. Adorama. FocusCamera. Calumet Germany. WexUK. Jessops.
FE 70-300mm at BHphoto. Amazon. Adorama. FocusCamera. Calumet Germany. WexUK. Jessops.