They are still relevant, but they may require a number of modifications to align them with modern SAP environments. In any case, they are not meant to be real solutions or ready-to-use dashboards. Just examples of what you could do with SAP data and how you can access it.
AFAIK there are no new versions available in the community.
Tried this today and worked very well! Set up the connector and after doing that the Qlik Start for SD got out a lot of very relevant data that proved for the customer what is possible if you know where the data is.