The VIRTIO 1.1 specification for paravirtualized I/O devices includes the new packed vring layout and the GPU, input, crypto, and socket device types. In addition to this there are other improvements and new features in the specification. The new vring layout will increase performance and offers new features that devices can take advantage of.
You can review the specification and post comments until February 21st 2019: VIRTIO 1.1 csprd01.
