Force One has posted an interview with Jake Simpson, talking about the force feedback support that will be in Soldier of Fortune, as well as word that the OEM version of SoF will be completed next week. Here's an excerpt for you:

Apart from the gratuitous thud of your dead body hitting the ground, and the dull thump of bullets tearing into your living flesh. (getting a little carried away there ;) ), we'd like to try stuff like the train going over the rails in the train level, and stuff like that. Right now though, its more important for us just to get support in and stable. The immersion drivers for the Mouse for instance require a lot of looking at, and we are working with them now to fix this.

One thing to be aware of is that there will NOT be support for FF in the OEM deal that is coming down the pike in the next month or so. This is because we are still elbow deep in developing the FF support, but the OEM version has to be done next week. I'm sure you guys understand deadlines and all that :)