Recently some open source projects utilisingZFS started working together in order to make the code (more) consistent and inter-exchangeable between the projects and start working toward one code repository. The Open-ZFS project was created to this end.
Matt Ahrens who was one of the two original authors of ZFS did a live Q&A session on Google Plus Hangouts, and the recorded version is now on Youtube. Watch to find out more about ZFS, the current and future developments.
Jump to 00:03:00 to skip past the setting up.