It's one of my priorities for my project Ephestos, but is a low priority. Meaning 5 - 6 years down the road.

The technology needs work, but I keep an eye on it.

Another thing is that I would prefer something on GPL or at least MIT license.

On the other hand nothing stops you from making a Pharo SDK for it. Why not give it a try ?
On Mon, 27 Jun 2016 at 19:53, Paul Davidowitz <pdavidow@fastmail.fm> wrote:
It would be fantastic if there were a Pharo SDK for Meta which is
powered by Unity (https://www.metavision.com/). Augmented Reality is all
about direct interaction -- the very paradigm of Smalltalk itself.