New in wheezy: NBD named exports and installer support
Just after the release of squeeze, I released nbd 2.9.17, which had a new feature that required some backwards-incompatible change: the ability to specify an export by name, rather than by port number. Obviously, that means that wheezy will be the first release to ship with support for such named exports (although a backport was uploaded to squeeze-backports with support for such a named export). After all, names are that more obvious a way to specify an export than is a meaningless number. The init scripts and root-on-NBD support was updated, although a bugfix was denied for r0 (it will hopefully get into r1).
In addition, during the wheezy cycle I finally finished the partman-nbd support in the installer. With this, it is possible to install Debian to an NBD device on diskless systems, which is nice.