It is! Both the physical and digital editions of the book will feature the bonus book content :)
We'll be ordering the books as soon as the Kickstarter comes to an end and the funds are sent over! We should receive them and all other rewards at the start of September, and then we'll start getting everything shipped out!
Kickstarter will usually charge you for your pledge when the campaign ends. This campaign ends on Wednesday 1st August at 7pm BST (UK time), so you should be charged around then.
Don't worry if your card gets declined - Kickstarter will email you and let you know so you can sort it out :)
Don't see the answer to your question? Ask the project creator directly.