Today's the first official day when The Forever Engine is live. Amazon has been shipping the advanced orders and is now posting reviews.(First one's up--four stars and a very nice write-up.) It should be in the stores as well, although I haven't yet braved "The Killer Storm of the Century" to find out if it's in my local Barnes & Noble.
Although the ratings change hourly, last time I looked the book was at number 13 for both time travel science fiction and steampunk on the Amazon best-seller lists, and that's mostly based on preorders. I don't really understand how those rankings work (and they make a point of telling you they will not reveal how they come up with them, I suppose so folks can't game the system) but since the sample size is over a million total book-like products, whatever 13th means, it can't suck.
Of course the book's been trickling out for a number of weeks. The Baen Books eArc (electronic advanced reading copy) was available a while ago and I've heard from folks that Amazon went ahead and sent the Kindle versions upon ordering starting sometime in December, and we're right at a point in the History of Book-like Things where the electronic version approaches the importance of the physical product. We've certainly passed it for some forms of Book-like Things.
Those of you in the Midwest and east coast: stay warm. Maybe curl up with a good book.