Here’s the link to the latest weekly snapshot of darktable 4.1, https://drive.google.com/file/d/1hbjPJM1Zy6mFiJ_8UmT3Jew_cbHHCz9Z/view?usp=share_link. The list of changes can be found here, Comparing 0a5f6d199..0f6969e63 · darktable-org/darktable · GitHub
Feature freeze was this week, so this build is the first feature complete build for darktable 4.2. Please test and report any bugs so that we can have them fixed by release time.