After reaching out to John Martinez, Director of the Publications and Services Division at the Office of the Federal Register (under the National Archives and Records Administration), it is confirmed that the December 22, 2018-January 25, 2019 Federal Government shutdown is the primary reason for the delays in both print and GovInfo’s annual C.F.R. title publications. According to Director Martinez, after finishing up the 2018 titles, the office began approving the current year’s titles (1-16) in early March, and the overall process takes at least 30 days to complete. At the time of the writing of this blog, certain parts of 2019 Title 12 are now available on GovInfo, and the remainder both print versions and the GovInfo versions of the 2019 C.F.R. Titles 1-16 will begin to arrive very soon.
Update: C.F.R.s on GovInfo