We wanted to provide the community some updates on this thread. We understand this topic is something our developers are very passionate about. We have some updates that we'd like to share with the community.
The community outlined some use-cases looking to bridge Image Targets and Ground Plane. Some time ago, I provided some alternative Unity components to aid in these requests in a Gist. While this solved some of the use-cases, it did not cover all the cases. I am currently working on an another set of components to cover the remaining cases. I'll update this thread once I have something to share. I’d like to point out that this approach does not require any updates to the Vuforia Engine – it simply leverages the Vuforia Engine in different ways.
There was also some confusion in regards to Vuforia's support for ARCore. As of Vuforia 7.0/7.1 - Vuforia does not leverage ARCore. In Vuforia 7.0,/7.1, developers targeting Android use Vuforia's own VIO instead of ARCore. As a result, developers may have of seen instability issues due to lack of ARCore. Internal support for ARCore is scheduled to be released in the next major version of Vuforia.
Last year we announced Vuforia Fusion. We outlined a long-term vision of how Vuforia would work with platform tech such as ARKit and ARCore. When we added support for ARKit, we took our first step towards Vuforia Fusion. In the next release of Vuforia, we are taking another big step towards Vuforia Fusion. Developers can expect to see changes related to Extended Tracking and Device Tracking. These changes will allow Vuforia targets to leverage ARKit and ARCore as necessary. For instance, Vuforia will use ARKit/ARCore for targets that are "extended tracking".
These upcoming changes should cover a lot of the use-cases outlined in this thread.
The team has been working hard trying to get all this functionality into the next release. We cannot wait to see the awesome experiences that you all build with the next version of Vuforia.