Following updates sent out about a week ago for BlackBerry KEY2 owners, BlackBerry Motion owners can now get in on the update love as well as software updated ACD519 has been released across most Motion variants including those on Bell, Telus, and more.
The update itself is relatively small coming in at around 100MB and containing all the September Android security patches. Once installed, you can verify the build under the Android security patch level settings which should show September 5, 2019.
Given there's no full changelog available if you get it downloaded and spot anything BlackBerry specific improved, let me know in the comments or the CrackBerry forums. There's also an autoloader available if you're not willing to wait for the OTA download.