Apple has released an amazing firmware update that adds support for AirPlay 2 to AirPlay Express. Firmware Update 7.8 supports the 2012 AirPort Express 802.11n model.
Apple's 2012 AirPort Express receives support for AirPlay 2
AirPlay 2 is an Apple streaming audio protocol that supports playback from multiple devices in multiple rooms without wait time problems. AirPlay 2 can be used with other Speaker products such as Apple's HomePod, Apple TV, Sos etc.
The beta versi of iOS 12 had a hint that AirPort Express might be supported by AirPlay 2, but until now, mini Wi – Fi routers seem to have remained in the past. We are pleasantly surprised that Apple has gained the support since Apple ceased manufacturing AirPort base stati products earlier this year.
To install Firmware Update 7.8 you need to use Apple's AirPort Utility app your Mac, iPhone, or iPad.