I'm sure there's some behind the scenes code updates to go along with the visual updates.
I'm not sure if I like the new layout or not. I mean, it'll do - and it's likely data driven. They likely hid options that are used less and are now showing options that were less used. 'Snot like they don't have that data available, so I'm sure there's some logic behind it.
Not that it really matters. I still gotta use it, so liking it doesn't matter too much. In a day or two, it'll likely feel like it has "always been this way".
I haven't flipped through the options yet to see if there's anything new.