[boost] [c++11]

This was probably discussed many times already, but I seem to not have been paying close enough attention. Maybe someone can point me to the discussions in the archives... With all of the cool new language features of C++11, am I correct in assuming that boost library developers have no real opportunity to use any of it in order to be backwards compliant with all the older standard? I realize there are many boost equivalents already in place, but when would it become permissible to use native C++11 syntax? Thanks, -Sid