Tvheadend

Most projects follow the X.Y.Z versioning scheme, where:
X: Major version number, incremented for BIG updates/changes
Y: Minor version number; odd numbers are development versions, even numbers are stable/release versions; numbers are incremented for feature changes/additions
Z: Micro version number, incremented for bug fixes

So, versions 4.1.x and 4.3.x are development builds. 4.1 is no longer being worked on, as it became 4.2 when it became stable. 4.3 will become 4.4 when it becomes stable. Tvheadend also appends release and commit numbers to the builds, where 4.2.2-235-g10c0eca means version 4.2.2, release/build 235, made from git commit 10c0eca. If you don't want to be using unstable/development software, stick with the 4.2 series until 4.4 is ready.

As far as upgrading (or even downgrading), Tvheadend will happily use your existing configuration, regardless of whether it is installed with a package manager or manually. (Or a combination: I manually build Tvheadend, but package it into a format for my distro's package manager.)

Thanks,

That cleared up some of my questions. Now I get how stable and/or unstable versions works. Now I just have to figure out if it's worth to install the unstable release. I have reported an issue that is fixed in version 4.3...... Which is the unstable version :-(

When pathes to unstable version features start to work without bugs one number of sub version up
or as X, Y, Z example Z start from zero and Y +1.
And again new features and bug fixes
There is a situations when old version has been pathed also, when some "hole" was been found ex #4152