Thanks to the National Association of Criminal Defense Lawyers, we can now read a tiny portion* of the Justice Department's Federal Criminal Discovery Blue Book, unsealed by a D.C. District Court. The court denied full disclosure of the 265-page manual on work-product grounds.
The disclosed portions (select excerpts from a mere 17 pages) don't tell us much, but they do restate important Giglio policies---though at times with more of an eye toward keeping defense lawyers from "improperly introduc[ing]" impeachment information than toward complying with constitutional mandates:
More importantly, the excerpted policies may provide additional fodder for claims that the government has failed in its discovery duties.
*Available through a link on NACDL's news release.