I doubt that the offer is any sort of record, but it seems pretty fast to me! Here I was getting worried that my submission hadn't gone through because I had heard no confirmation. The reply to my e-mail almost caused a medical mishap. I started talking a lot like Porky Pig with intractable stuttering.
Now the real work starts. My vocabulary should return to normal in a day or two. I have no idea about things like release dates or book cover artwork, however I do know that it will be in the form of an E-book. I will let you know more when I do!