Version 1.61.0

Release date: August 4, 2026 Highlights Introducing lazy loading for st.dataframe : large dataframes now load their rows on demand automatically, so the browser stays responsive. A new lazy parameter lets you turn this on or off explicitly, and Polars LazyFrame objects are supported natively ( #15756 ). st.cache_data and st.cache_resource have a new refresh_mode=”background” option that refreshes expired cache values in the background, so your app keeps serving the previous value without waiting ( #16057 , #5871 ).