I've noticed a rise in proposals for standard .txt files. I wonder if it's because of the ability for llms to interpret human-language text files.
https://securitytxt.org/ (e.g. https://curl.se/.well-known/security.txt)
https://humanstxt.org/ (e.g. https://swwweet.com/humans.txt)
https://llmstxt.org/ (e.g. https://annas-archive.gl/llms.txt)
https://site.spawning.ai/spawning-ai-txt
Ofc there's also been more proposals for adding features to existing widely adopted standards. Like content-signals for robots.txt[1]