The Dawn Of War 2 Community Website has news about plans to include Tyranids in Dawn of War II, Relic's upcoming Warhammer 40,000 real-time strategy sequel (thanks Dagok). The update offers a screenshot illustrating their contention that this was only possible thanks to their new game engine:

Nothing makes us more excited and happier to let you in on the secret we’ve been hiding (and working so hard on) for so long. And not only are we letting you in on the secret, we are letting you in first!

The Tyranids are in Dawn Of War II!

For us, the Tyranids was a way to give the fans something they have been asking for ever since Dawn Of War… but it wasn’t until we designed the Essence 2.0 Engine did we think that the Tyranids could be brought to the Dawn Of War universe they way that we felt we could do them justice and in the way that the fans deserve. The Tyranids are a great way for us to bring something new and different to the franchise… a completely different race which operates unlike any other seen in Dawn of War to date.

“Each Tyranid is a living weapon, perfectly adapted to its designated function, but each creature is no more than a single cell in a galactic entity governed by a monstrous Hive Mind. As the Tyranid hive fleets drift through space they strip all life from the worlds in their path, leaving nothing but scoured rock in their wake…