13.10提前了？

[rosn]

很久没开机了，今晚开机一下i就跳出13.10升级可用的信息，问我想升级吗？
Welcome to Ubuntu 13.10 'Saucy Salamander'

The Ubuntu team is proud to announce Ubuntu 13.10 'Saucy Salamander'.

To see what's new in this release, visit:

http://www.ubuntu.com/desktop/features
Ubuntu is a Linux distribution for your desktop or server, with a fast and easy install, regular releases, a tight selection of excellent applications installed by default, and almost any other software you can imagine available through the network.

We hope you enjoy Ubuntu.

进论坛一看13.10的版块没有了，知道是正式版来了，但不是说25号吗，以往只会推迟现在是提前了。真的是正式版吗？

[bugbug]

我的没提示更新