Debian 13 is powered by the Linux 6.12 LTS kernel, uses the GNOME 48 desktop by default, relies on the GCC 14.2 compiler by default, and has a wealth of other package upgrades like OpenJDK Java 21, Python 3.13, and many other updates.
Debian 13.0 is also the first time Debian has official support for RISC-V 64-bit, there is support for HTTP booting via UEFI and U-Boot, the 64-bit time_t ABI transition is complete, there is more work around reproducible builds, and a lot of other enhancements. Debian 13.0 is also delivering some nice performance improvements over Debian 12 .
Those wanting to download Debian 13.0 right now can do so via cdimage.debian.org . More details on the Debian 13.0 changes via the release notes .