ARRIS Cornerstone NIU Voice Port

Are there any future plans to replace the older ARRIS Cornerstone NIU Voice Ports currently in use with eMTAs?

I only ask this question, because I would need to rewire my landline alarm system, if the NIU had to be converted to an eMTA. Which would require work in the attic, since it is winter here in AZ, now would be a good time to make those new drops in the attic.

But if there are no plans, then I will not even bother.

If my NIU ever died, my next door neighbor has one on his home that is not in use, could it be used to replace mine, or would I be forced to get an eMTA?

Thanks.