Our current release is 3.3.0. We are planning an update with additional variables (and some fixed bugs) by early summer 2022.
For a detailed description of our data construction and a discussion of the data and results see our paper ("The Rise of Process Claims: Evidence from a Century of U.S. Patents") on SSRN. You can find the main findings in this short handout.
For a short summary of the project, take a look at this deck of slides (December 2021).