The new update for Honor 9X series brings Ark Compiler for system performance improvement, Optimizes camera for better photo quality and enhances display settings for the better gaming experience. Moreover, the update also includes August 2019 security patch.
Honor 9X and 9X Pro receiving this new update with software version 126.96.36.199 and .128 respectively. The update is currently rolling out in China because the phone series is only available in its hometown but soon be released in other markets.
If you want to check for the update manually you can do this by following the instruction below:
Go to Settings > System > Software update > Check for Updates.