Long time ago that I have been checking this thread. Is there still active development going on for BBR?
yes.
first there was going to be a fork. then there was not going to be a fork, then the fork was considered again to popular demand, and now the fork is cancelled.
the good news, the original developer is back and has support of another user whom has interest in the project continuing. The original developer has new plans and has been active in the last week or so.