[pessimizer]

"Unstable" is actually unstable. What you want is "Testing," or if you're a little more conservative, you want Stable + backports: https://backports.debian.org/

> You are running Debian stable, because you prefer the Debian stable tree. It runs great, there is just one problem: the software is a little bit outdated compared to other distributions. This is where backports come in.

> Backports are packages taken from the next Debian release (called "testing"), adjusted and recompiled for usage on Debian stable. Because the package is also present in the next Debian release, you can easily upgrade your stable+backports system once the next Debian release comes out. (In a few cases, usually for security updates, backports are also created from the Debian unstable distribution.)

[yyyk]

"Testing" has the problem where security patches also get delayed, so it ends up less secure than unstable or stable (!). Unstable isn't that bad IMHO, stable+backports also works.