Sony Xperia C680X test scores hint at 1080p screen, 4.2 Jelly Bean

Sony unveiled its first two flagship Androids for the year early on at CES – the C660X Xperia Z and C650X Xperia ZL – but there seems to be another high-ender on the way, the Sony C680X.
The model name cropped up at html5test.com, a website that benchmarks a browser’s compatibility with the HTML5 standards. The browser was running on Android 4.2 Jelly Bean device with a 1080p screen. Unfortunately, we don’t know how big that screen was.

We checked the other usual sources (Picasa, GLBenchmark, NenaMark, Indonesia’s Postel) for more info on the device but there’s nothing yet.
Considering that the difference between the C650X Xperia ZL and C660X Xperia Z is mostly in the external shell (different dimensions and waterproofing), how much different can the C680X Xperia be? And will there be a C670X?
We might find out at the MWC, but seeing how late the first leak about the C680X is, we don’t think it’s particularly likely. The C210X Xperia L and C530X Xperia SP are more likely candidates to be at Sony’s booth at the show.