The U.S. Department of Labor has published a new version of the Occupational Outlook Handbook (OOH). The OOH is the principal source immigration officers look to when analyzing whether a position falls under one of the TN visa occupational categories, or if an applicant possesses appropriate credentials for an occupation.
It does not appear that major substantive changes were made in the OOH to job descriptions or educational requirements. The updates instead focus on including more employment statistics and projections. This type of data tends to not play a major role in TN visa adjudications.