I am referring to https://wiki.centos.org/Manuals/ReleaseNotes/CentOSStream and i am not sure if i understand it correctly, Is it a separate CentOS distribution which is similar to CentOS-8 (1905)?
Currently CentOS-Stream is the same as CentOS.
In the future new features and upgrades will appear in Stream as a sort of rolling release and it will form the basis of future RHEL releases (and subsequently CentOS releases). It will also be the place for community input into RHEL/CentOS. Think of it as halfway between the cutting edge Fedora and the stable RHEL releases.
The industry still needs the absolutely rock solid platform that is RHEL/CentOS for mission critical servers and as a basis for commercial software. But there is clearly also a need for more up-to-date things for desktops and so on that doesn't have the cutting edge "danger" of Fedora.
P.