different Dapper iso versions?

[Russell Davie]

Hi

There are now two versions for i386 desktop available.
Whats the difference between the 6.06-desktop an the 6.06-rc-desktop versions?

the ubuntu-6.06-desktop-i386.iso.torrent version from:
http://releases.ubuntu.com/dapper/

the ubuntu-6.06-rc-desktop-i386.iso.torrent  from here:
http://mirrors.uwa.edu.au/ubuntu-releases/6.06/     
and    here:
http://mirror.pacific.net.au/linux/ubuntu-releases/6.06/

- R