Hi! Lucid said he added it so I decided to just make a thread to inform everyone how to use it!

In game, at the bottom right there is a cog that is used to mute game, turn on vote logs, etc.

If you click this cog, Lucid has added a new check box, "Speech Filter", if you click this box in game, small boxes appear next to players names. If you check the boxes, it will gray out everyone that isn't checked, this way you can focus on reading certain people (Isolation read) should you care to!

Looks like this: