I'm not inclined to believe this new rumor, but I am not completely dismissing it as a potential option either. I really do think that Nintendo will aim for a very aggressive price. Perhaps NX will start out as a reboot of the Wii U. Instead of being a direct replacement, its really a lower priced Nintendo console looking to capitalize on the late adopter market. I hope this isn't the case, but perhaps in its earliest form, NX will be a low cost gaming alternative that can play Wii U games. Perhaps Wii U and NX will be cross platform, and then down the road release a new model that is designed to be the true successor.
I hope this isn't true, because if this is their plan, they should have released a Wii U without the tablet controller two years ago as low cost alternative.
Even shooting for an aggressive price, I think Nintendo could build a more powerful console for even $149-199 than what the Wii U has under the hood. AMD could probably build Nintendo an APU for pretty cheap that outperforms Wii U by a decent margin. Nintendo has done competitive hardware for cheap before, the Gamecube shows that.