Honestly too many things to list. When it's finished the devs will post the changelog. But the scaled sort option is a popular addition, remote follow is cool, giving users the ability to block instances, and a bunch of fixes too.
There's been some posts about a few of the updates, but a complete changelog won't be until the release happens, which should be this year?
It was part of the Great Leap Forward campaign while the great Mao Zedong was in charge. While they called themselves the Chinese Communist Party, I seriously doubt that true communism was ever achieved.
It has never been achieved. Any communist will tell you. The only differences between all of us is how long we're willing to put up with the "transition" phase and what we feel that "transition" phase should be like. Some are ok with strong-man fascist dictatorships, as long as they are ostensibly "transitional" phases into communism. I am not. Nor do I consider any fascist state to be in any way communist or leading to communism.