This release introduces native support for relying party-initiated logout in the new OpenIddict client and updates the server stack to support the new (optional) client_id
parameter introduced by the OpenID Connect RP-Initiated Logout 1.0 - draft 03 specification. While it's not supported yet by most client stacks (including the Microsoft OIDC handler for ASP.NET Core), it's now fully implemented in the OpenIddict client, that will become the recommended option for ASP.NET applications once it reaches RTM.