Check out what Mugglenet had to say!:
"Pottermore and Google are teaming up to integrate Pottermore with a number of Google products and APIs. So when the series of Harry Potter ebooks launches on Pottermore.com in early October, these bestsellers will be available in the U.S. via the open Google eBooks platform. When you buy a Harry Potter ebook from Pottermore, you will be able to choose to keep it in your Google Books library in-the-cloud, as well as on other e-reading platforms."
Now you can have more Pottermore anywhere, any time! Pottermore will officially be available in October.