So Debian (broadly) has three main versions. Stable, Testing, and Unstable (sid). Since you are waiting for a stable release, I'm assuming that's where you'll stay.

The one thing to know is that you are entering a very different kind of Linux environment than Mint and Manjaro. When Debian means stable, they mean it. It is rock steady....but it also means you'll be outdated when it comes to features. The only updates you will get are going to be stability and security based. And that's for the life of that OS version. So if you desperately need to update something for a new feature, you'll need to learn backports.

Honestly, I love it (apart from on my gaming rig). It's the OS I install on people's machines that just want a no fuss, easy to use OS, that won't crash or glitch out.