Fedora 45 has entered its beta phase, marking a major step toward its official release on October 20 or October 27. Known as Red Hat's open-air laboratory, Fedora has historically been a testing ground for new technologies in the Linux world. It was among the first distributions to adopt the Wayland display server as the default in version 25, setting a trend for others to follow. The beta version of Fedora 45 brings a range of updates, with a particular focus on security and reproducibility, ensuring that software behaves predictably across different systems. The beta includes the latest stable Linux kernel, version 7.2, which introduces performance improvements for AMD and Intel processors, support for newer HDMI standards, and enhanced features for virtualization through KVM. Additionally, GNOME 51, the default desktop environment for the Workstation version, features new tools like SVG cursors, a more user-friendly fingerprint management interface, and better support for remote connections. For users who prefer the KDE Plasma desktop, version 6.7 is available in a separate variant. Fedora 45 also brings significant updates to development tools, including the latest versions of GCC, Python, and other core components. These updates, while improving performance and security, may break compatibility with older software, requiring recompilation or adjustments. Podman 6, a key tool for container management, introduces major changes, including the removal of outdated components and new APIs. Meanwhile, the distribution upgrades MySQL and MariaDB to newer versions and enhances NetworkManager to support "IPv6-mostly" networks by default. A major security focus in Fedora 45 is the push for reproducible packages, where the same source code and build environment produce identical binaries. This ensures consistency and helps guard against tampering in the software supply chain. The RPM package manager now enforces stricter signature verification, ensuring only trusted packages are installed. Additionally, changes to kernel settings limit debugging permissions for non-privileged users, reducing the risk of malicious activity. The default secret management system has also been updated to a lightweight Rust-based solution called oo7, which improves security and supports modern authentication methods like FIDO2.