Are these new kits or scratchbuilds?
In the newest (US) White Dwarf is the following photograph.
There is a lot of debate online on whether these are scratchbuilds or a future GW plastic kit.
Personally I am almost 100% sure that these are scratchbuilds. If these were plastic kits, then why wouldn’t GW make more of them (as they have done with the Imperial Guard BaneBlade).
My other thoughts on this are, if these were GW, I would expect them to be painted in the ‘Eavy Metal style, and they’re not.
I am pretty sure at this point in time these are not a future GW kit, but it would be nice if GW did make a Stompa at some point in the future.