from the sites press info:
San Francisco (February 20, 2008) — Havok™, the premier provider of interactive software and services to digital creators in the games and movie industries, today announced that the company will offer the PC version of its award-winning physics and animation software product – Havok Complete – for download free of charge.

Available for non-commercial use, Havok Complete for the PC will be freely downloadable in May 2008.