I think Mycroft is dead at this point. The project had some intertwined relationship with other projects and Neon AI. The suggestion from Mycroft at this point is to use NeonAI's OS for the Mycroft device:
Although MycroftAI, Inc. has ceased development, the Assistant survives.
A few years ago, some of MycroftAI’s partners started using @JarbasAl ‘s code (more information below) which eventually became a fork of the assistant. Now that MycroftAI is unable to continue development, the fork’s devs - The OVOS Foundation - have decided to take up leadership of the Assistant’s development and its open source ecosystem.
MycroftAI has signed over Mark II software support, as well as these forums, to one of those partners, a company called NeonAI. Between the OVOS Foundation and NeonAI, the voice assistant and the smart speaker project are getting a new lease on life.
The OVOS Assistant - it’ll get a better name soon, we promise - started out as a drop-in replacement for Mycroft. It should be compatible with all your classic Mycroft skills. It will even accept existing configuration files! Because we have been operating at a much smaller scale for the past three years, things will seem rough around the edges for a little while. However, we are scaling up. Read on.
https://neon.ai/NeonAIforMycroftMarkII