I stopped procrastinating and finally took the time to write the second article of my series of blog posts on SSM: https://huggingface.co/blog/lbourdois/ssm-2022. In this blog post, I review the history of SSM models released in 2022, with over 14 models discussed in a synthetic format. They are separated into two parts: "theoretical" (DSS, S4D, GSS, Mega, S5, etc.) and "applications" (Sashimi, ViS4mer, CCNN, etc.).