i think it was a valid worry when a company with limited resources to support external hardware:
a) release a new out of cycle device (c2) from a different vendor and very different hardware
b) then says that it will support both the 10iv and 10v - after too long a delay into either devices sales lifecycle
without either one of the problems above we have the usual nail-biting wait for each new annual 10 release, with both of them…
put it this way, I use a 10iii for SFOS and have a 10vi as my android banking device until SFOS arrives for it.