According to the official ACE Team blog, consider Zeno Clash 2 officially official, with the second entry currently in the planning stages. ACE Team co-founder Carlos Bordeu writes that "he next installment to be much larger in scope, so the new game will feature open ended gameplay with large explorable environments and RPG elements."
The team also plans to revisit the Zeno Clash melee combat system for "even more brutal and engaging gameplay."
Hopefully, they'll address some of our concerns with the original title—specifically the gunplay, storytelling and the amount of game you get for your dollar—to make the visually unique world of Zeno Clash worth revisiting.
New Trailer & news about the sequel... [ACE Team]