I just found this on Trumpeter web site, new release announcements for March:
http://www.trumpeter-china.com/en/menu/tank/1-35/00346.htm
There are some details revealed: it will have 503 pcs, sprues for both track width mine plow and mine roller and I think only one new sprue.
Here is high resolution diagram of sprues:
http://www.trumpeter-china.com/ch/menu/jj/00346.jpg
I'm not sure but it looks that they used the hull from their M1A1 kit.
Regards,
Pawel