Privateer Press Shattered Grounds league details
From their website:
The next advancement in Warmachine and Hordes leagues is mobilizing for action April 5th. The Shattered Grounds league throws players into the trenches of the Iron Kingdoms with a wholly immersive experience as they fight for the glory of their faction.
While the Shattered Grounds League shares a few similarities with its predecessor, Call to Arms, this new league has been completely reinvented to offer an amazing new experience unlike any Warmachine/Hordes league you have ever participated in.