Would you stop going down the path that the new chassis is an evolution of the old one? In fact, this "new" chassis predates the Type-99 chassis, as the Type-90 came before the Type-99. Read up on these tanks on Login or Chinese Space Program | SinoDefence.com
Changes:
1. The spacing between the Wheels from second to fifth are reduced, gives a shorter chassis..
2. New Engine Compartment from new engine..
3. Modified Fuel tanks..
Similarities:
1. The spacing between the wheels from second wheel to fifth are inherited from previous chassis..
2. The No of wheels are same..
3. The Torson bar suspension is same and the bars at same place as before..
The ERA is covering the older turret and front addon is removed form older turret..
No it doesn't, Its not first in PLA..
US, Israeli and Uk so does newer T-90M using different size ERA to give proper protection, Regular tiles don't fit every where and leave Expose parts..
I will reply regarding the ERA later when I have the time. In short, I still do not think that those are ERA blocks due to their non-applique appearance.