The previous release covered on Phoronix was Genode OS 12.11 and it became self-hosting. With Genode OS 13.02, the prominent highlights is DMA support via IOMMUs and the new ARM enablement.
The ARM support in Genode OS 13.02 is for the ARM Cortex-A15-based Exynos 5250 SoC and the Freescale i.MX53 SoC.
There's also improved virtualization support in this release via the Vancouver x86 virtual machine monitor built on the NOVA hypervisor. The Vancouver improvements include Intel VMX support to complement AMD SVM technology, timer support, console support, network support, disk support, and real-tiem clock.
Last but not least, Genode OS 13.02 better supports low-latency audio output.
Some other work includes new UART drivers, PCI support for IOMMUs, ACPI support for 64-bit machines, and a restructured USB driver.
Many more details on the changes making up Genode OS 13.02 can be found via the extensive release document.