Why Debian 13.3 Matters for Ubuntu 26.04 LTS: Deep Dive into the New Toolchain and Security Upgrades

Debian 13.3, released on January 10 2026, brings GCC 15.2, GDB 17.1, Signed‑by repository policies and eBPF audit hardening, all of which shape the upcoming Ubuntu 26.04 LTS feature‑freeze, migration timeline, and security posture for backend, AI and SRE workloads.

DebianGCC 15.2GDB 17.1

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