he's not hinting anything, he's shown two pictures that prove the video contains two devices. that's why he said he can't hint or it will give it away. too obvious. that's my guess anyways. I bet he doesn't want to get in trouble so he won't confirm anything like that too quick.
-edit-
okay i watched the video again, the keyboard part is sharp edged and the back is rounded, I think the phone is actually fairly thick, it's just hard to see with the camera angles. But it looks like it's just one device again now. Even the camera module looks the same. So the thing I thought was a speaker is just the writing for the camera.
educated guess: the keyboard device is the developer version that was rejected by the carriers because of the flimsiness issue a while back. this one will probably be handed out at the conference. the keyboardless (newer) version is the one that will be sold to the masses.
and if this is correct: do both phones have the same hardware, seeing as one was developed later than the other?
