The camera part is allegedly coming one step closer to reality, as EXIF data from a shot that is supposedly taken with the SE Nozomi leaked.
The picture info shows 4000:2250 resolution, which is 9MP in 16:9 format, the way Nokia N8's 9MP mode works, whereas the regular 4:3 format utilizes fully the 12MP of its camera. The phone is apparently to have a f/2.4 aperture, like the iPhone 4S, improving its low-light capabilities on paper.
metal chassis for an Xperia line phone. It seems pretty unconvincing that this will be the Nozomi, though. The initial source of the picture appears to be the Xperia Blog, which received a cease and desist letter from Sony Ericsson last week, so make of this what you will.
Moreover, the navigational buttons underneath the display are in the old Xperia style of thin buttons, whereas in the latest phones of the series we have a huge semi-circular button as home key in the middle. Android Ice Cream Sandwich with its virtual buttons credo might have changed the design paradigm at some point, though.