We have seen a variety of sources showcasing their previews of the upcoming module. Screenshot features are coming out more often.
And then, in the official forums, Moon says:
Yes, we're going to release the manual just ahead of the module. I've just about wrapped it up today actually and it goes into final proofreading now. There will be no pre-orders for the BF module, it's going to be a straight release.Looks like almost everything is ready.