I am very happy to see this post about 3v3 and I think it is the correct decision from the team. My non-professional opinion is that frequent (weekly? biweekly?) communication with the following tone will be important for community discussion & morale:
“Here’s what we’re thinking / what’s on our mind / what we’re exploring / what’s upcoming”
“Here’s a reminder of these other things we’re working on, and a link to the previous announcements etc.”
“This is a work in progress, seriously, nothing is final and anything could change if that change produces better gameplay”
You forgot to add, "and here are links to all of u/PointyArt's Drawing Stormgate Badly posts since last week."