I'm struggling to see how this is an issue. There's always a lag between new iPhone feature announced and 3rd party devs adoption. ALWAYS. From new resolution of iPhone 4 to new screen ratio of iPhone X.It is their choice to not reveal this. But this also means that the early adopters do not get the value. Secrecy has a price.
It's almost like people just starting to follow Apple this last couple of years and surprised. I'm not.