The review is at PCPop [Google Translate].
The Onda V975i is an iPad Air clone with a 9.7-inch Retina-class screen, a 64-bit Intel Atom Z3735D CPU with a typical frequency of 1.3GHz and a peak frequency of 1.8GHz, 2GBs of RAM, 32GBs of internal storage, microSD card slot, micro-HDMI-out, 2MP front and 5MP back camera. It doesn’t have 3G.
There’s no surprise other than the quality of the camera (click to enlarge):
It doesn’t look very good, unlike the samples IMP3Net published.
There’s still no word on when the Windows 8.1 upgrade will be released for it.
Previously here:
Onda V975i Gets A Review
Onda V975i User Report
Video: Windows 8 On Onda V819i And V975i
Onda V975i: Android And Windows?!
Onda’s New 64-Bit Tablets
Mike Cane’s xBlog 
Make a video review :D
I don’t own the tablet. The review is from China. If any video review appears, I’ll post it, if it’s worth seeing.
Noticed that with v1.06 some of the applications start to crash. Apparently there is problem how firmware “lies” itself to applications -> XBMC build for x86 does not work, but reports that use other version instead. ARM version works ok. Facebook from Play store goes into continuous reset loop with SIGILL which leads to believe some problems (possibly with houdini?). Our local TV streaming service app (MTV Katsomo) dies quite similar way. Both Antutu and 3D mark report somewhat lower scores (3D mark around 14k to 12k) with firmware 1.06.