The first thing that I immediately noticed was that the camera in 3D view uses a different type of projection I believe orthographic(?), and I wish there was a setting somewhere that could change the type of projection used. The second thing I noticed was that build times are ridiculously faster than 3028, which is a massive plus in my opinion.
Could be the preview builds. WM now builds your world in the background up to a certain resolution. If you then were to export on that same resolution, it’s possible more than half your world is already build in the background. Other than that, I haven’t noticed real speed improvements, tho the UI is a lot snappier and the overall experience a lot better!