The league will span 12 weeks. Each round will last 2 weeks this will give you plenty of time to arrange a game with your opponent. Pairings will go out on Monday at the beginning of each round. When you come in and sign up you will declare a faction. You do have to play that same faction throughout the entirety of the league, but you can play different Masters each round if you would like.
The round structure is as follows:
May 1st: Week 1: 26 soulstones, Master-led only
Strategy: Turf War Scheme: Assassinate Deployment: Close
May 15th Week 2: 30 soulstones, Master-led only
Strategy: Reconnoiter
Scheme: A Line in the Sand, Bodyguard, Protect Territory, Cursed Object, Murder Protégé
Deployment: Standard
May 22nd: Week 3: 40 soulstones, Master-led only
Strategy: Stake a Claim
Scheme: A Line in the Sand, Protect Territory, Distract, Entourage, Deliver A Message
Deployment: Flank
May 29th: Week 4: 50 soulstones, Master-led only
Strategy: Reckoning
Scheme: A Line in the Sand, Breakthrough, Assassinate, Frame for Murder, Outflank
Deployment: Corner
June 12th: Week 5: 50 soulstones, Master-led only
Strategy: Squatter's Rights
Scheme: A Line in the Sand, Bodyguard, Distract, Plant Explosives, Power Ritual
Deployment: Close
June 26th: Week 6: 50 soulstones, Master-led only
Strategy: Turf War
Scheme: A Line in the Sand, Breakthrough, Protect Territory, Make Them Suffer, Murder Protégé
Deployment: Standard
Thanks and more info can be found here