Seeing that it is probably a derivative of the T70 (from the bodyshell alone; no specs to confirm if it is larger), I concede that it has a greater chance at making to production (than all those historical Yema prototypes), so I wish it luck!
MIIT has released details of a new Yema, SQJ6460B1, which has the appearance of the T80 but with the rear section (from the rear passenger door) considerably shortened.
Its dimensions are, L x W x H: 4650×1835×1715 mm, wheelbase: 2665 mm.
Current T70 dimensions: 4555 × 1835 × 1688/1715 mm, wheelbase: 2665 mm.
Published T80 dimensions: 4720 x 1820 x 1716 mm, wheelbase: 2800 mm.
So it is likely to be the new T70, or if not that, an intermediate model to eventually replace the T70.