They randomly pick between
1. Announce balance changes before patch
2. Drop patch with balance changes suddenly without warning.
3. Tell people balance patch is coming but not what's in it so they only find out when it's released.
Looks like this'll be a type 3
1
Battletag: -
Region: EU
Trade only? I will show, but you go first.
Fast mode: – 1 player will pass turns :)