Sizer 2019, Update 2 (Version 12.2) was released on June 22, 2021. It contains the major new features Load and Resistance Factor Design (LRFD) and Shear Deflection for SCL, I-Joist and CLT members, as well as other small improvements and bug fixes.
The LRFD feature is described in NDS Appendix N - LRFD Design and LRFD Load Combinations. Shear deflection is described under Structural Analysis and Deflection Design . The resulting changes to the program are more fully explained in the Sizer Features and Changes document, along with descriptions of the improvements and bug fixes.