KDnuggets Weekly Roundup: Week of July 13, 2026

The Apache Data Lakehouse community focused on structural specifications and releases from July 11 to 18, 2026. Iceberg contributors proposed removing equality deletes from the V4 spec, while Parquet finalized a new File logical type. Meanwhile, Polaris addressed persistence layer consistency. Concurrent release votes included Iceberg Rust, DataFusion, and Comet. Separately, KDnuggets highlighted the Python Registry Pattern, SQL portfolio projects, AI YouTube channels, and structured language model generation using Outlines for data professionals.