The current stable distribution of Debian is version 10, codenamed buster. It was initially released as version 10 on July 6th, 2019 and its latest update, version 10.8, was released on February 6th, 2021. … The unstable distribution is where active development of Debian occurs.

How stable is Debian?

Debian Stable is released usually every two years. It endures a freeze cycle of couple of months before getting released. So software in it gets pretty old by the time it is released. Debian Stable version is damn stable as software and libraries in it go through rigorous testing.

Is Debian unstable stable?

Currently Debian offers security updates for testing but not for unstable, as fixes in unstable are directly made to the main archive. So if you are running unstable make sure that you remove the lines relating to security updates in /etc/apt/sources. list .