https://software.intel.com/sites/default/files/managed/c6/a9/319433-020.pdf
Most of the instructions are implemented, more on the way.
+ few bugfixes for legacy AVX-512 emulation
AVX-512: Fixed bug in VCMPPS masked instruction implementation with 512-bit data size
AVX-512: Fixed AVX-512 masked convert instructions with non-k0 mask (behaved as non masked versions)
AVX-512: Fixed missed #UD due to invalid EVEX prefix fields for several AVX-512 opcodes (VFIXUPIMMSS/SD, FMA)