A few things I am really excited about in this release are the new protbuf compiler ( https://vitess.io/blog/2021-06-03-a-new-protobuf-generator-f... ) and the improvement on end to end speed ( https://benchmark.vitess.io/macrobench?ltag=10.0.0&rtag=11.0... )
Vitess was already one of the most performant distributed databases, this is really pushing the limits even further.