Vuforia 7.1.34 introduces auto-focus and high-resolution video background support on ARKit devices. Bug fixes include resolving App Store submission issues encountered. Please note changes in supported architectures on iOS and Unity PlayMode on MacOS. See release notes for details.
Currently available for download via the Vuforia Developer Portal and coming soon via a Unity 2018.1 patch release.
Updated Unity samples for Vuforia 7.1.34 available here.