there are going to be a few of them competing at the worlds so wont be too long before they are available
Ally chassis, with an optional carbon version, 1/8th style diff cases to allow for quick diff tuning, longer wheelbase than the T4, new 14mm hex wheels (these are soon to be available as option for TM2 etc)
It looks to be more than just a 4wd TM2, although similar layout it has a lot of new parts