Alright, I'll spill some beans. I just hope it stays w/in this forum and does not come around back to me. My source is a dear friend, first and foremost, and I'd like to continue to have that relationship.
There are 3 phones that I know of that are in the works for this year.
The one on Engadget kind of looks like the phone I got to play w/ last month except the backside is sealed with scratch resistant brushed aluminum and the location of the bottom button was in the center. And it was thinner than the N97 and had an 8mp/LED camera; I understand the bigger brother will have [at least] HDMI output.
My friend said he delivered a set of them to developers at a conference just a week prior. He said the case would not reveal too much about the physical properties of the phone. Perhaps, this is one of those phones.
///Michael