The latest one I could find is the 2021 version.

are these included in eurail pass?

Here is the map:

https://www.eurail.com/en/plan-your-trip/railway-map

Please note that the map gives an overview. To plan your trip in more detail I recommend you to use information from the national railway companies. The German Railway has a good site:

https://www.bahn.com/en

I found that one too but 
https://www.eurail.com/en/eurail-passes/bestseller-10-days
in this site there is a map, looks few countries. that’s why we’re confused. is this true?

The routes shown on the map in the link you added seem to show the travel of a single person. It is shown as an example of how you could travel.

There is simply NO good map at all. I have a set of those leaflets from the times they still gave these with all passes and its ….s...t. There is also country-info on main site (a bit hidden) and for some countries this is also --same-  s...t. Some look more as roadmaps as railmaps.

In my home I have+cherish an old complete atlas (you know-a printed thing) from the times when FRance just staretd opening their TGV-hispeed service. And roughly the last timetable book of many countries-with the routemaps of that time.

Note that in many countries a map says little- as f.e. there are BOTH trains included in pass-and from another company that is not. Like in DE FLIX and DB oir in ITaly TrenIt and Italo.

You can safely assume that about any large and 99% of medium cities in EUR have a train service of sorts-but not always via the most direct route. PLUS that a map shows railLINes-and you want to check what SERVICE actually run-like all those notovertheborder journeys in Balkans.

The national rail timetables/planners of most countries will have a current map hidden somewhere=thats probably the best you can use for rough planning.