LTS versions - confusion

[Tanstaafl <tanstaafl@libertytrek.org>]

    Hello,
    
    So, I'm considering Debian for a new homebrew MX gateway I want to
    set up, but it depends...
    
    I'm a former Gentoo user, and really appreciated the rolling release
    aspect, since it meant no huge jumps between LTS releases with other
    distros.
    
    So... what is the current LTS version and when is its EOL, and when
    will the next one be released, and what will be its EOL?
    
    Thanks,
    
-- 

Charles