Default [Q] Step counter sensor

Apologies if I'm in the wrong forum, this is my first post here

I've heard about a hardware sensor in the Nexus 5 onwards which enhances step counting and step detection - has anyone ever heard whether this is likely to be copied by other manufacturers and likely to feature in future iPhones or Galaxies?
It seems to be getting a lot of attention and I wonder why LG's rivals aren't already working on incorporating this sensor into their own phones

thanks for all answers