Samsung Galaxy S8 Plus renders hint at dual camera, no stereo speakers

We’ve seen several 3D renders of the Samsung Galaxy S8, but the one render we have of the Galaxy S8 Plus did not show its back.
And the back matters - according to rumors, only the Plus model will have a dual camera on the back. Not that these renders show it, but the hole for the camera is suspiciously wide and much wider than that of the vanilla Galaxy S8.

Samsung Galaxy S8 Plus: Front • Back (note the camera hole - wide enough for two)

The sides of the phone are quite interesting too. Initially, we thought that the Power button moved on the left, but we now see it in its original position (on the right). Recent rumors have mentioned that Bixby, Samsung’s upcoming AI digital assistant, will have a dedicated button.

There's an extra button - it should summon the dedicated AI assistant, Bixby

And we move to the bottom to find a USB-C port. Like the camera, we can’t fully trust what has been drawn, but the hole is wide enough to accept USB-C (it could be that the case maker is just playing it safe). And, of course, there’s the 3.5mm headphone jack on the bottom.

Bottom with USB-C and headphone jack • Top with no grill for the second speaker

That said... where’s the speaker grill for the top speaker? The smaller Galaxy S8 had stereo speakers (top and bottom).