Important:
Keep in mind that this is a first pass on the design update for November this year. Things may look very different as testing goes on with numbers changing, new changes being added or other areas being rolled back.
http://www.teamliquid.net/forum/starcraft-2/525866-starcraft-ii-multiplayer-major-design-changes
http://us.battle.net/sc2/en/blog/20975163/starcraft-ii-multiplayer-major-design-changes-8-17-2017