No release date yet per'se, I need to get on the testing dyno and other testing also need to finish designing the modular airbox the one pictured is for the 450r. If all goes well, and I should have a released version this fall. I could have Carbon fiber much sooner, but I'm looking into buying my own thermoforming equipment so I can make these in a High Density Polyethylene as well.
Yes the FCI on the YFZR does make a nice improvement, I've been measuring nearly 2hp over a prodesign setup. I have dyno comparisons on my yfzr with the FCI and about 7 different intakes I've designed. I have one that matches the FCI, but I think there is more room to go, we'll see anyway. Here is the best of each of those. All tests were done on the same day, same bike, same filter, same fuel, etc... Within 30-40 minutes of each other, I have over 150 runs on my yfz450r already.
Here is some pics of my dyno room when I was still installing all of the stuff: