Ok, firs new feature is to see other players selections with simple command /sv watch [playername]. For simpler code and to avoid overwhelming particles from bunch of other players, you can watch only one player at time. it will show exactly what other player sees.
Now big feature, which one is live saver for me... Now you can see WE paste location before pasting it!!! Yes yes, you can even rotate or flip it and it will show exactly where it will be pasted. Command is /sv we paste. And yes its supports schematics, just load schematic like usual and use /sv we paste command. This feature will be getting some overhaul later on to be even more useful.