Ubutnu 9.04 ‘Jaunty Jackalope’ is now available to download over at Ubuntu.com!
The servers will be getting a bit of a hammering so i would suggest downloading it via the official torrents:
ubuntu-9.04-alternate-amd64.iso torrent
ubuntu-9.04-alternate-i386.iso torrent
ubuntu-9.04-desktop-amd64.iso torrent
ubuntu-9.04-desktop-i386.iso torrent
ubuntu-9.04-server-amd64.iso torrent
ubuntu-9.04-server-i386.iso torrent