Me and https://github.com/bitwiseshiftleft are the core maintainers, even though bitwiseshiftleft is not very active any more.
I'm thinking about increasing the core maintainer team though.
Release process: We need to work on this.
Roadmap: sjcl is in maintenance mode, meaning that the core maintainers do not add any new features. Thus a roadmap does not make much sense.
The master branch is ahead of 1.0.4.