Release DataFusion `55.0.0` (Jul 2026)

[alamb]

Is your feature request related to a problem or challenge?

Previous release is #21080 (May, 2026) so next major release would be approximately Jun / Jul 2026

Steps:

• Create a branch-55 branch:
• Update version and changelog:
• Test with DataFusion Python
• Test with DataFusion Comet
• Test with DataFusion Ballista
• Test with delta.rs:
• Test vortex:
• Test with iceberg-rust:
• Test with LakeSail:
• Test with parquet viewer
• Test with datafusion-materialized-views
• Voting Thread
• Publish to crates.io
• Create ticket for next release:
• Create blog post:

Features to mention in the blog (if they make it)

• [EPIC] Simplify datetime predicates using "preimages" #19946
• [EPIC] Implement Range Partitioning #22395

Bugs that should be fixed

Community Wishlist