I’m making a start on the next release of siunitx: v2.3. There are a number of issues in the database targeting this release, and these are mainly about dealing with things behind the scenes. Some options need revision, and I need to improve the table code somewhat. However, I doubt that there will be much to excite users. That’s not necessarily a bad thing: there seem to be a lot of siunitx users, and I don’t want to break the code! Of course, if there is a particular issue that needs addressing then the usual rule applies: make a case to me and I’ll see what I can do.