They did release some documents, but in a quick skim I don’t see much.
https://www.dni.gov/files/ODNI/documents/DIG/DIG-Declassified-Evidence-Obama-Subvert-President-Trump-2016-Victory-Election-July2025.pdf
A lot of people seem to be focused on the claim that “they changed their conclusion!” But the initial “conclusion” was that Russia did not hack vote totals, and the later conclusion was that they ran an “influence campaign,” both of which of course are not mutually exclusive.
I’ve seen some claims about “spying on Trump” but not sure where exactly in the documents that supposedly is.