What sensor/processor is in there?
Is it the same as the NEX-5N, or is it upgraded? It's obviously not the same sensor as the NEX-FS100, which is a 3.43MP sensor, vs the NEX-EA50's 16.1 MP. It seems likely that the low-light performance won't be quite as good and there will be more moire effects.
What is the sensor size?
Sony uses Super35 designation for the NEX-FS100 and APS-C for the NEX-EA50, though the two are very close.
I've seen the EA50 quoted as being 23.6 x 15.8, yet other numbers are often quoted for APS-C. The NEX-FS100 is quoted as being 23.6 x 13.3 mm.
Is it just that APS-C adds more pixels for the still picture aspect ratio?
NEX-7 = 23.5mm x 15.6mm (3:2 aspect ratio)
APS-C = 25.1mm x 16.7mm (3:2 aspect ratio)
Does it have picture styles or the ability to adjust sharpness, contrast and saturation? What's the Rolling Shutter like?
One of the problems of the NEX-VG20 is that it's very limited in image controls, so it's more like their DSLR (and NEX- still cameras) than it is like the NEX-FS100 video cameras. Did they improve things on the NEX-EA50?
Why didn't they put Neutral Density filters in it?
Would it really have added that much to the cost?
How good are the mechanics on the zoom lens?
Can you zoom fast and slow? Is it smooth? The manual lens Sony makes for the NEX-FS100 and VG20 can be very sticky. I assume they've fixed that!
Why aren't they selling it separate from the lens?
They finally did that for the NEX-VG20 after first selling the NEX-VG10 with a lens...
How good is the digital zoom?
The digital zoom is controllable by the rocker switch (optionally) but how good is it really?
What's it feel like to hand hold, and have on your shoulder?
I hope the tripod connection is more sturdy than on the NEX-VG10/20.
Most of these questions should be answered as soon as it's in the hands of some reviewers!