I haven't compared it directly with other models in terms of the speakers but I think they have lost some volume. Can't be helped though, if they wanted to move stuff out of the top screen.
What I'm wondering is, how do you even open up the top screen? There are no screws on the inside, and the back won't slide off (the edges are curved so the bottom part near the hinge catches). I was thinking it would be a lot easier to do case swaps etc with it since there's a lot less "stuff" to force down the hinge slots.