This iMac's shell is looking a bit bare, but we're not done yet: the "enhanced stereo speakers" are next.
Early reports are that these speakers live up to the hype: they're the best-sounding speakers you can get on a Mac.
...until, we suspect, you can pair it with a Homepod—which should take the whole experience to the next level. We won't know for sure until the Homepod finally hits shelves sometime in 2018. (Is it just coincidence that it looks a bit like a Mac Pro?)