Although the kit lens is an inportant part of the package for many A77 buyers, I haven’t seen many reviews of the lens alone yet. These are the ones I’ve found:
Photoreview (Australia) have the most in-depth test. They found that “the review lens turned in an impressive performance in Photo Review’s Imatest tests, which showed consistently high resolution throughout the aperture and focal length range.”
SLRgear also has a proper test.
Dyxum.com has a couple of user reviews already and I guess we’ll be seeing more as the A77 becomes more widely available.
From the reviews so far, the kit lens is holding up well and looking good value. For those with other Sony cameras, it’s available for pre-order from Adorama.
EDIT: Within hours of writing this, Luminous Landscape posted a positive review of the 16-50mm f2.8.