Matthew Dillon is moving the FreeBSD-based pkg binaries out of the regular location to make room for the pkgsrc version, which will be in the next release. That next release, by the way, is coming before the end of the year.
On a related note, Simon ‘corecode’ Schubert has proposed moving to rsync instead of cvsup to get updated code; cvsup works well but requires a lot of resources to build.