I think the chance of RO on a new Laptop designed specifically for RISC OS is extreemly low, if as appears likely, the RS version is a non-starter.
However the idea of using existing laptops is good. It is just unfortunate that using an x86 laptop under emulation is, at present, more viable than porting RO to an XScale laptop. Hopefully this situation will change. But I think it will need ROL and Castle to pool their resources.
Just think what OS we could have if ROL, MD, Castle, Simtec, RS, Windfall and WSS pooled their resourses.