I am interested in the SAML, but it looks like that Saas already have an
early access program currently (EAP) for that. Also what is the different between Dynatrace managed and Saas ? and which current version number is Saas in, since the release is done every 2 weeks ?
There isn't too much of a difference, they both have the same components. Managed is just an on-premise version of Dynatrace if customers would prefer to use that over the SaaS offering running in AWS by Dynatrace.
This has some details on managed: https://www.dynatrace.com/support/help/get-started/managed-introduction/what-is-dynatrace-managed/
They will have the same features over time, though managed is typically a release behind SaaS with updates delivered monthly.
I don't work with the release schedule but I see the SaaS environment I work with is currently on 137 I believe.