Although it is still listed on their website, Technisub resellers claim they do not get any more Marina. However, Technisub brought a successor freediving mask to the market -
Technisub Micromask. It is not yet listed on their corporate website, but you'll find some information in Google.
micromask.jpg
There is a review in French here:
Plongeur.com » » Technisub Micromask» la passion de la plongee sous-marine