happy to hear that there is someone interested by managing the review of Bitfields.
Brian Bartman implemented a tuple-like interface on top of mine in its GSoC project "bit_masks" (see the sandbox SOC\2010\bit_masks), and I think that it will be better to review both library at once and even better to join the libraries in only one.
I have had not enough time to review the state of last version, but I was quite satisfyed by the work at the end of the GSoC project. Maybe you can take a look.
There is yet one issue, Bitfields are endian-safe only if the storage is endian safe, so we need Boost.Endian which provides an endian-safe storage. Would you be interested in been the review manager for Boost.Endian?
Here is a link to my SOC project http://svn.boost.org/svn/boost/sandbox/SOC/2010/bit_masks/. The current status of the project is unfinished however I plan on completing it and submitting it for formal review some time near the end of December or early January. (School and work are preventing me from having enough time to finish it currently) -- thanks, Brian Bartman