Solaris 11.4 SRU33 Released
Perhaps most notable is the VirtIO guest support now being included with Solaris 11.4 SRU33. This KVM/VirtIO guest support was merged for 11.4 SRU33 and includes the PCI framework and driver support and various other components for guest support in complying with this virtualization standard.
Making Solaris 11.4 SRU33 significant are also many package updates like various GNOME 3.36/3.38 components, GMP 6.21, XTerm 366, Curl 7.74, libSDL 2.0.14, and many others.
More details on these overdue changes for Solaris 11.4 SRU33 via the Oracle blog.