Sorry for the snarky title, but this is not the first time I complain about this and I wanted it to shock a little.

SDL's documentation team is regularly behind the sofware to document new features, those features that we really need documentation for because they are NEW...

• Example1 : https://community.sdl.com/ideas/translation-productivity-ideas/i/trados-studio-ideas/improve-the-documentation-for-the-json-filter.   It looks better now in 2021, but was badly insufficient in 2019.
• Example 2: Deprecation of the HTML4 filter in Studio 2021.  Not ONE word about it in the documentation.  Had to have long discussion with support to solve our use case and how to convert our custom filter to the new HTML filter framework.  They actually found useful info in the API documentation!
• Example 3:  YAML filter documentation. https://docs.sdl.com/813470/805508/sdl-trados-studio-2021-sr1/yaml (wow, really?) and even better, the link from the dialog in the SW:  https://docs.sdl.com/SDL_Trados_Studio_2021/en-US/Yaml_Parser
• Example 4: change in UI for the XLIFF filter, not documented in the Help. 
• There are so many other examples over the years where documentation was sorely lacking, especially in complex areas that are not obvious at first glance.   

It's great that we have people in Support and people like Paul Filkin to fill-in the gaps, but it shouldn't be necessary.   A company like SDL, which prides itself to be a DITA shop should do better at tracking their new features and scheduling the documentation for them.