I'm unaware of a page-by-page comparison between the 2022 and 2016 versions. However, section 1.1 of the new version has the following—

This document updates the Source Selection Procedures guide issued April 1, 2016, by:

• Addition of Appendices:
  • Appendix D Streamlining Source Selection and
  • Appendix E Intellectual Property.
• Updated References to SAM.gov,
• Updated Table Definitions:
  • Table 2A,
  • Table 2B, and
  • Table 3.
• Updates to Statutory and Regulatory References.