New Debian (Wheezy) has just been released. Here you will find how to update quickly.

This post is an update of Debian – upgrade to Squeeze.

Notice: Before you start the upgrade – upgrade your current system and backup your data

Here is the process:

1. Edit sources.list
vi /etc/apt/sources.list>
2. Replace distribution name (Squeeze) with Wheezy.

(press : and type)

%s/squeeze/wheezy/g

Then you execute the upgrade in two easy steps.

apt-get update

apt-get dist-upgrade

Then to finalize the upgrade:
reboot