Don't know if this is out there yet but I will relate what I heard at Gencon:
1. Allied walkers are armor 7 with 10 wounds
2. Allied walkers can transport 6 troops
3. Fireball has flamethrower with range 3
4. Axis walker that looks like a flak cannon (sorry can't remember its name) is armor 6
5. Axis walkers are not transports
6. All walkers will take up 4 squares: 2x2
7. None will have bases