I have the older one and it worked great. That is the same way the Power Snoot connects and I was not a fan as the SB-910's head was larger than the power snoot and it was never as secure as the Lightsphere. Now the materials that it's made from are completely different, so it may not be an issue.
Thanks....I just bought it. I have the original collapsible but needed another one for my second flash. The first one is a bit of a pain to get on, especially if shooting outdoors in cold weather. The fact that he has this new design must be because he got LOTS of complaints. I like the new design and it could not have been better timing. Thanks