That's not new, its been around for a few years, it uses a smart projectile the actually counts the revolutions in flight, thus so many revolutions for a given distance, an on-board computer in the scope will determine. This then detonates above or near the unseen target. It is called a proximity round, can be found in HE, incendiary or fragmentation.
Well it's off the path and Current News and Events....But, why is this survival preparedness news? I must be missing something.