The Expert edition doesn't include Wikitude's Instant Tracking (a.k.a positional tracking). However, it integrates a direct communication between Wikitude and ARKit's/ARCore's Positional Tracking.

Moreover, in the Expert Edition Wikitude provides a plugin that enables you to combine our engine with AR Foundation (ARCore & ARKit) features, such as Positional Tracking, Plane, Face, Body, Extended tracking, Occlusion, etc.

If you want to use Wikitude's Instant Tracking, you can work with the Professional Edition.

See full features here and download packages here.