Could we have an official answer that's easy to find please? As of now, Steam has it listed as:
Title: From Dust
Genre: Simulation, Adventure
Developer: Ubisoft Montpellier
Release Date: Aug 17, 2011
Languages: English, French, German, Italian, Spanish
3rd-party DRM: Ubisoft Online Service
I will never ever touch a game with always-on DRM.