GuruTech has posted the answer to a one question Q&A with 3D Realms' George Broussard talking about the new Sven Technologies' Multi-Resolution Geometry technology that they just announced would be included in Duke Nukem Forever (story). Here's the reply (kinda hard not to gank the whole thing):

George Broussard: We've had the stuff in for something like 5-6 months. It dropped it in initially in a couple of days. We tweaked things over a couple of weeks and have had no problems. The game will benefit from drawing less polys than it needs to. DNF is a test bed for the technology for us, but I see no reason not to consider it for future games. It saves you from re-inventing the wheel.