The new offlineimap3 has started!
We've decided to fork offlineimap to offlineimap3 in order to support Python3!
The maintainer of this new project is Rodolfo.
The legacy offlineimap (py2) project will be maintained until offlineimap3 is ready.
We've decided to support the efforts. The discussion about how to allocate the budget is here: https://github.com/OfflineIMAP/offlineimap/issues/679.
You're welcome to add your comments in this thread. :-)