https://lists.debian.org/debian-user/2017/07/msg00374.html https://lists.debian.org/debian-user/2017/07/msg00374.html provides some links that are in line with

https://lists.debian.org/debian-user/2017/07/msg00374.html https://lists.debian.org/debian-user/2017/07/msg00374.html provides some links that are in line with my experience. YMMV of course. Quote: One user described the releases this way: "Stable is never broken; Unstable is immediately fixed; Testing is neither" [3]. A Debian developer seemingly agreed, responding "That's because some things might break in testing during migration. E.g., when we upload a new major release of something like MATE and half of the packages take a bit longer to migrate to testing, you end up with half of the packages of MATE in testing on the old major version and the other half being on the new major version. This will definitely break" [4]. Chris Lamb also seemed to agree, asking the user why he had not considered Unstable over Testing [4].