This is my quick summary of the JFK assassination document release. The biggest revalation is that CIA's Angleton was almost certainly using Oswald in some type of operation, but definite proof that he was under close scrutiny by Angleton himself over 4 years. Jefferson Morely explains that we now have a clear fact pattern that did not exist prior to this release. Another important revelation is the story of CIA office Gary Underhill, who told family that he knew CIA agents involved, and that they knew he knew. He was suicided six months later. We can know read Schlesinger memo to JFK on how to reform the CIA. (This is a document that has absolutely nothing to do with national security but was redacted in full for 60 years)
There is much more than that in the files. There are also documents still missing, including the Johanedis files and Bill Harvey travel records. I believe, at this time, the 24,000 newly discovered FBI files on the assassination have not yet been released.
Here are several good links on a you tube discussion and links to articles at Jefferson Morley's JFKFACTS.SUBSTACK.COM.