Ubuntu 13.04（Raring Ringtail）正式版下载已经放出，随之而来的有：Linux kernel 3.8.8、Unity 7、Upstart 1.8、LibreOffice 4.0、CUPS 1.6.2 和 cups-filters 1.0.34 以及 Python 3.3等。

Ubuntu 13.04（Raring Ringtail）下载地址：

推荐 - 中国科技大学开源镜像站：http://mirrors.ustc.edu.cn/ubuntu-releases/13.04/

• http://releases.ubuntu.com/13.04/ (Ubuntu Desktop and Server)
• http://cloud-images.ubuntu.com/releases/13.04/release/ (Ubuntu Cloud Server)
• http://cdimage.ubuntu.com/netboot/13.04/ (Ubuntu Netboot)
• http://cdimage.ubuntu.com/ubuntu-core/releases/13.04/release/ (Ubuntu Core)
• http://cdimage.ubuntu.com/edubuntu/releases/13.04/release/ (Edubuntu DVD)
• http://cdimage.ubuntu.com/kubuntu/releases/13.04/release/ (Kubuntu)
• http://cdimage.ubuntu.com/lubuntu/releases/13.04/release/ (Lubuntu)
• http://cdimage.ubuntu.com/ubuntustudio/releases/13.04/release/ (Ubuntu Studio)
• http://cdimage.ubuntu.com/ubuntu-gnome/releases/13.04/release/ (Ubuntu-GNOME)
• http://cdimage.ubuntu.com/ubuntukylin/releases/13.04/release/ (UbuntuKylin)
• http://cdimage.ubuntu.com/xubuntu/releases/13.04/release/ (Xubuntu)