USCprelim:

Starting in 2010, the OLRC began a pilot project, called the USCprelim, to update certain titles of the U.S. Code on the website throughout the year as laws affecting those titles are enacted, rather than waiting until the end of the congressional session. Although these titles are also prepared from the same database used to prepare all other versions of the Code, they are posted to the website as a preliminary release, before all editorial notes have been added and before all work has been thoroughly reviewed. Thus, it should be expected that the preliminary release will be subject to further revision before it is released again as a final version. Nevertheless, the preliminary release should be useful to those seeking a more current version of the law. As with other online versions of the Code, the U.S. Code classification tables should be consulted for the latest laws affecting the Code.