Paradox has announced
Sword of Islam is coming in June to PC and Mac, priced at $10 USD.
At the same time, Paradox plans to release another (free) patch for the game. Version 1.06 will add a bunch of new features, including “an expansion of the map into Mali-Songhay, differentiation on strong and weak claims, new plot, expanded combat and more”.
A trailer for the DLC can be watched, below.