I will purchase your book as well, but with a hope that there will be an ePub version released in the future. I have a junky Sony e-Reader that is not so great at touch controls for things like zooming and panning (necessary with most PDFs) and an ePub would reflow the text as needed based on font size.

Well, I am hoping you do release the ePub version to people buying the PDF because I am buying the book right now :)

I just bought your book, really hope you can release epub version too. Thanks

ePub is important to me as well. Mostly because it's the format that http://readmill.com supports.

(I'm aware I can convert it to ePub myself)

Same here, will buy but I really want the ePub version for my eReader.