Released on Monday was the "RC0" development version of QEMU 1.3 for the open-source processor emulator commonly used with the Linux KVM virtualization stack.
Among the interesting changes for QEMU 1.3 include support for the Linux VFIO driver
to assign PCI devices to a virtual machine, Loongson Multimedia Instruction support on MIPS, the TCG code generator supports SMEP and SMAP features of new Intel CPUs, Xtensa single-precision floating-point support, improved support for USB 3.0, USB re-direction now being supported under live migration, block device improvements, and much more.
QEMU's SPICE support now includes seamless migration handling, multiple monitors on a single PCI device, arbitrrary resolution support, and various other enhancements.
More information on QEMU 1.3-rc0 is available from QEMU.org