Gang,
Qi4j migrated to Apache a few years ago, and managed to push a 3.0 release out the door, incl full Java 8 support.
However, as a community, we didn't manage to live up to the expectations of activity and attracting new blood into the project and Apache Polygene (as it was called after a short stint as Apache Zest, which conflicted with Eclipse Zest) was put into the Apache Attic.
That doesn't mean that there is no value to the codebase, and I have decided to migrate back the Apache Polygene codebase to the GitHub Qi4j project, and will try to maintain it to the best of my ability, and any help/interest is highly appreciated.
Cheers
Niclas