Some of the files in boost/pending/ seem to have been there for quite a long time, is there a plan for their future?

I see a potential maintenance problem when they are used by "regular" Boost libraries; when/if they are promoted to full Boost library status (maybe even with documentation ;-)) things will start to break. Anyway, I'm thinking that there should be some info on these pending files. Have I just missed it?

Bjorn