This [1] here. Sadly, the maintainer has had enough. It still works for the latest minecraft I think. It runs so nicely on linux - far more processor efficient than the java version, and runs even better than bedrock on Win10. I'll be sad when it stops working, but will probably just 'hold' on an old minecraft version at that point.
[1] https://mcpelauncher.readthedocs.io/en/latest/getting_starte...