Streamlit 1.57.0 docs: release notes, st.bottom, API index

[sfc-gh-jrieke]

📚 Context

Document Streamlit 1.57.0 on docs.streamlit.io: release notes, API reference for st.bottom, cheat sheet, menu, and regenerated python/streamlit.json (including 1.57.0).

🧠 Description of Changes

• Release notes: 1.57.0 section in content/develop/quick-references/release-notes/2026.md and highlights on release-notes/_index.md
• st.bottom API reference:
  • New page content/develop/api-reference/layout/bottom.md (<Autofunction function="streamlit.bottom" />)
  • Bottom RefCard + screenshot (public/images/api/bottom.jpg) on layout overview and main API reference index
  • Menu entry in content/menu.md
  • Cheat sheet tile with st.bottom.chat_input(...) example
• Docstrings: Regenerated python/streamlit.json for 1.57.0 via make docstrings

Current:

No st.bottom docs; version picker / API reference stop at 1.56.

Revised:

1.57.0 release notes and st.bottom discoverable in API reference, layout cards, cheat sheet, and sidebar menu.

💥 Impact

Size:

• Small
• Not small

🌐 References

• Notion

Test plan

• Preview build: release notes (/develop/quick-reference/release-notes and 2026 page)
• API reference layout page shows Bottom card between Sidebar and Space
• /develop/api-reference/layout/st.bottom renders (note: streamlit.bottom is not yet in streamlit.json until generator support for block contexts is added; page may show Autofunction “does not exist” warning until then, or manual content like sidebar.md is preferred)
• Version picker includes 1.57.0 after deploy (restart dev server locally after streamlit.json changes)
• Cheat sheet “Add elements to bottom” example

Made with Cursor