Yes, Apple has approved my application, which means I can now submit my book to Apple and hope that it will be included in the iBookstore. You can keep checking Mallard Press to see me document my experiences.
UPDATE: I’ve sent the epub to Apple and will now await Apple telling me I’ve done something wrong. One of the things that’s bad about a company that sweats the details is that they really, really sweat the details.
ANOTHER UPDATE: At least the iTunes Connect web page now lists my book as Pending. My biggest gripe with the Apple submission process so far has been the lack of automatic confirmation emails. You know: “This is an automated reply to inform you … do not reply to this …”