A prototype implementation of version 3 of Boost.Filesystem is available for comment. The critical feature of this prototype is the replacement of the class basic_path template with a single class path that supports both narrow and wide character paths. It also supports user supplied types, and will support the new C++0x char16_t and char32_t character types as compiler and standard library support becomes available. There is still a lot of additional work before V3 could be added to the trunk and eventually released. For example, work so far has concentrated on the new functionality, and ignored breaking changes to existing code. But enough stuff is working to make requesting comments useful. See http://svn.boost.org/svn/boost/sandbox/filesystem-v3/libs/filesystem/doc/v3_... for a fuller description of the prototype and links to the prototype implementation. I've got some specific issues I'd like opinions on, but would first like to hear comments from anyone interested. --Beman