Onkyo USA and Pioneer & Onkyo USA Corp announced that AirPlay 2 support is coming to select network-enabled products via a firmware update later this spring.
Onkyo Products
AV Receivers: TX-NR585, TX-NR686, TX-NR787, TX-RZ630, TX-RZ730, TX-RZ830
Network Stereo Receivers: TX-8270
Pioneer Products
AV Receiver: VSX-S520, VSX-LX103, VSX-LX303, VSX-LX503
Network Stereo Receiver: SX-S30