Greetings! 
I have installed Parrot OS 5.0 since I read that is a RR.
Now I have read on the PR page that with the v5 was changed to the LTS ( Long Term Support) principle. This means that you then, for example after 2 years, must update to the latest version.
Or have I misunderstood something? 
Is already something known about how this procedure looks like?
Many thanks to the developers and helpers! 
Hi. Yes, there has been a big change in Parrot regarding its release model. Version 5.0 is LTS, although you can enable repositories that contain all the latest updates of your packages (everything is explained in the parrot.list file). In any case this will always be updated and clearly with each update the upgrade to the next version will be made. The life cycle of 5.0 follows the one of the current Debian Stable.