OpenBSD is an amazing project and has some of the best code around but some of us are of the opinion that it could use a bit of modernization. OpenBSD is a very security conscious project and, correspondingly, has to be more conservative with features. We want to be less restrictive with the codebase when it comes to experimenting with features.
"With the goal of bringing more experimental development to the OpenBSD code base, a few developers have announced a fork named Bitrig. According to their FAQ, Bitrig aims to build a small system targeting only modern hardware and "be a very commercially friendly code base by using non-viral licenses where possible." Their first step toward that goal was removing GCC in favor of LLVM/Clang. The project roadmap shows their future goals as adding FUSE support, improving multiprocessing, porting the system to ARM, and replacing the GNU C++ library with LLVM's."
Portability and modernity instead of a security focus?
I'm not sure why I would use a fork of OpenBSD instead of just FreeBSD though. I've always seen the primary benefits of OpenBSD as deriving from their obsessive focus on security, but if this fork isn't focussed on that I'm not sure what I gain vs. other BSDs that already have these goals and objectives in place/completed.
OpenBSD has always had a strong focus on protability. It's just the focus on portability was never restricted to "modernity" for the reason that there's few interestingly different processors anymore you can compile against to check for breaking errors.
It would be interesting though if Bitrig became sort of a DragonflyBSD for OpenBSD, where weird experimental stuff can be tested in a separate playground.
Forking is the way of the BSDs. The BSD style is to develop the userland along with the kernel. Thus where Linux has multiple distro families BSD has full userland and kernel forks.
It'd be easier to carefully add specific features to a well-designed and secure codebase such as OpenBSD, rather than try and pare down and audit the huge codebase and large amount of features provided by something like FreeBSD.
