Sony doesn't reach back to older models to add new features. Your receiver is two models from the current model (which doesn't support airplay 2 either, just airplay). If you don't see it coming for the STR-DN1080 or STR-DN1070, you can bet it isn't coming for the STR-DN1060. The only receiver that has a slim chance is the STR-DN1080 and no announcement has been made.
Email support and tell them you want it and be prepared for disappointment.
What specifically do you need from airplay 2 for your DN1060?
Denon and Marantz have committed to some form of airplay 2 support but haven't specified which products. Denon, Marantz, and Yamaha are more likely to evolve existing products than Sony. At Sony, new features only come in the form of a new receiver. Others have been known to reach a model year or two to add support for new features.
As far as airplay 2, no one has explicitly said 2017 receivers will support it that I know of but you can bet it will be offer on some 2018 units.