I finished a book about this (Billion Dollar Burger) just last week. The technology has outstripped the regulatory authorities, and the CEO of Just has been working for the past several years to have a product approved by someone. They came close in the Netherlands, but ultimately to no avail. He hoped that once one country issued approval, others would follow more quickly.
The other interesting thing is that Israel is a hotbed of research on this, and the holy grail is using scaffolding to be able to grow solid muscle cuts with fat marbling such as steaks, as opposed to muscle-only cells good only for ground meat.