The question is one of desnity (enough MB per unit) and cost per unit. Freescale might just have it close to market, though. Being into embedded CPUs and SoCs, they could directly benefit from it.
Chances are it won't be useful for PCs for a long time (I could be wrong, but I'd bet it's too slow), but for slower devices, it could rock. Flash is very slow compared to HDDs, and has problems concerning writes (all kinds have limited writes, and if not used conservatively, they can be worn out).