#1 It's taller than previous versions and has an angled current configuration rather than a rounded slope shape.
#2 Also (more significantly) the treads seem to be of the supported nature, similar to our setup. In the past the Russkies used a "Flat Track" that was easier to maintain in the field but not as efficient in moving the vehicle as our supported versions.
There might be other clues but I'm too tired to look that carefully.
What’s the difference in a supported tread and a flat-track tread?