The latest Warmachine and Hordes League, Blighted Shadows, starts on October 11th.
From their website:
This October sees the fury of war sees the forces of the Protectorate of Menoth, Cygnar, and Legion of Everblight work to achieve their own ends beneath the shadows of the mighty Wyrmwall Mountains. Unleash all new season models including the Arcane Tempest Journeyman solo and Bile Thrall Snipers as you fight for the glory of your faction and be sure to check out No Quarter 32 for all the Blighted Shadows season model stat cards. Blighted Shadows begins October 11th and runs through the 31st.