For what it's worth, I'm not convinced that Microsoft will be releasing a Surface Book 2 so soon. I think the SB with Performance Base is what's to hold things over until October 2017, when we'll see the Surface Book 2 released. I just don't get why they'd release the Performance Base update just a few months before coming out with a completely new version, and they've definitely settled on their October events as when they intro new hardware.
I could be wrong, of course, but although there have been rumors of the SB2 and Surface Pro 5 being released along with Creators Update, I just don't see it. I think the update will be released on its own, like Anniversary Update was, and then in October we'll see Surface Phone, Surface Book 2, Surface Pro 5, and maybe a Surface Studio refresh.
I'll note that I've seen absolutely nothing pointing at a February release. Creators Update is slated for "Spring," and that's starting March 20.