What's Changed

P4 Specification Implementation

• Generalized array support by @ChrisDodd in #5115

Changes to the Compiler Core

• Decimal numbers support for the json lib by @stan-leetasi in #5283
• Clean up IRDumper to use visitor infra properly by @ChrisDodd in #5282
• Midend pass to detect entries with duplicate or unmatchable keys by @ChrisDodd in #5248
• def_use: Avoid ProgramPoints merge where possible by @iand-xilinx in #5273
• Limit warnings about unused things by @ChrisDodd in #5239

Changes to the eBPF Back Ends

• Add bpftool to eBPF back end instead libbpf. Rework ebpf kernel header and Python loaders for Ubuntu 24.04 support by @fruffy in #5183
• Add sys/types.h include to ebpf_kernel and disable failng PSA-eBPF test. by @fruffy in #5275

Changes to the TC Back End

• Use uv to manage Python dependencies, add Ubuntu 24.04 CI test. by @fruffy in #5047

Changes to the P4Tools Back End

• [P4Testgen] Print and error instead of throwing a BUG when the architecture package does not match. by @fruffy in #5277
• [Testgen] Always terminate testgen midend passes with MidEndLast by @kfcripps in #5306

Other Changes

• Only push docker image when the branch is main. Not on the merge queue. by @fruffy in #5274
• Update some specific Github actions to Ubuntu 24.04 by @fruffy in #5290
• Automated Release v1.2.5.7 by @github-actions in #5308

New Contributors

• @stan-leetasi made their first contribution in #5283
• @iand-xilinx made their first contribution in #5273

Full Changelog: v1.2.5.6...v1.2.5.7