Since Stas left last year, unfortunately nobody from the WMF has done
anything with
https://www.wikidata.org/wiki/Wikidata:SPARQL_federation_input . I don't
know if the new SPARQL people are even aware of this page.
My bot produces a weekly federation report at
https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/Federation_report