A final update for 2020: we published preview 3 of Duende IdentityServer to Nuget!
The big feature added in preview 3 is support for resource isolation - our implementation of the Resource Indicators for OAuth 2.0 spec (RFC 8707). See also my blog post from yesterday about resource isolation.
We also enabled support for data protecting all persisted grants and removed all dependencies to JSON.NET.
We are now feature complete, and this will be the last preview before we release v5 on the 14th January. Looking forward to that!
If there are any problems, please let us know on our issue tracker or
contact us via our website.
Thanks and happy new year!