The charts on these lenses indicate that they will be superb optically. The only question I've always had with the A7 camera series is whether a full-frame mirrorless system promises enough of a difference in terms of features and compactness to be a viable alternative to a true DSLR. As the chart below indicates, the lenses are no light weights, and, although the A7 itself is a more compact camera, than a comparable DSLR is its convenience obviated by the larger optics demanded by full-frame.
One thing that cannot be denied: The A7 system is excellent for what it can deliver in terms of image quality, and the four lenses announced today only raise the bar even further.
Sony Distagon T* FE 35mm f/1.4 ZA Lens - $1598
Sony FE 24-240mm f/3.5-6.3 OSS Lens - $998
Sony FE 90mm f/2.8 Macro G OSS Lens - $1098
Sony FE 28mm f/2 Lens - $448