Sony FE 28-70mm f/2 GM Announced

Along with the a1 II announced earlier today, Sony also released a new FE 28-70mm f/2 GM lens! Although there are already a few 28-70mm lenses for Sony E mount, such as the Sigma 28-70mm f/2.8 DG DN Contemporary, this will be the first with a very bright f/2 constant aperture. It follows in the footsteps of Canon who already has the Canon RF 28-70mm f/2 L USM, although it improves the concept in a few ways. Being a Sony GM lens, we can expect the highest quality from this new optic. What does this lens have to offer?