Those are just renders, not actual photos of devices. Jxd has a long history of matketing and promoting devices, and then cancelling/postponing the promoted device to 'focus their efforts' on yet another device - it's one of the reasons they have something like 30 devices under their name - all of them pretty shitty quality, because rather than fixing something, it's easier for them to make yet another device.
Honestly guys, don't get your hopes up about the s5800, chances are pretty high they won't exist, or they'll take the internals, put them in a new case in 7-8months and call it the 's5110c' or something.
In fact, i've had quite a few jxd's - i can say that A: i am never getting hopes up at all about a jxd device again, and B: the build quality, quality control, and overall delivery of a device that lasts longer than 2 months with average daily usage seems to be impossible for jxd.
I'm not hyping up the nvidia shield, infact i cancelled my preorder a while ago, but if you are considering an android device, i'd highly suggest the shield.