What do we know about these grivel tools?

Seen these tools for a couple years now, any news about them? To my understanding, fully carbon shaft with this metal head piece.

Grivel/Azzali posted this a few years ago now, but it's been crickets since except for seeing a few on social media.

https://grivel.com/blogs/news/from-the-murcielago-to-the-dark-machine-and-beyond-by-stefano-azzali?srsltid=AfmBOoq8pL8y3Nd65wfXmQqMmcuA-4KWJqj3YZ6VWs4oItNKAnyeOFPC

Yeah read that blog a while ago, saw these photos last season. Wish they came to market