Calling these changes "improvements" is a stretch. Still flat, still dreary. They should have at least gone for a "Flat 2.0" look [1]. Flat 2.0 is is mostly flat, but it makes use of subtle shadows, highlights, and layers to create some depth in the UI. This is definitely not Flat 2.0. Look at that button. Looks almost like a disabled text input. Dreadful.