In true Harry Potter spirit, the Pottermore Insider blog post that we told you about earlier has secret text hidden within it that appears to hint at how the Pottermore beta sign-up will work.

The text below can only be seen when looking at the HTML of the post. It’s hidden right before the “What’s going to happen on July 31st?” question:

Remember, to get into Hogwarts you must have magical ability…

The text links to a Q&A by J.K. Rowling from the year 2000.

Our guess? The beta sign-up won’t be a simple “enter your e-mail and you’re registered” type of deal. What are your theories?