Pottermore's Insider blog updated on their progress on letting the first million people into J.K. Rowling's official Harry Potter interactive site, as part of the Magical Quill challenge. More on that, as well as a preview shot of the Great Hall with Professor Dumbledore presiding, below.

We’re now four days into the Pottermore Beta and we wanted to update you on how things are going.

At the start of this week, we sent out Welcome emails to a small number of Beta users. These people have been busy exploring the site, leaving comments to tell us when they like something, and making suggestions when they find something they would like us to improve. In just four days we’ve learned an awful lot and, as a result, have started making changes to improve the Pottermore experience.

We know that a lot of people are eager to receive their Welcome emails and that it’s difficult to wait but, as we mentioned in our earlier blog post, we’re staggering entry to Pottermore and to start with we’re only letting a small number of people onto the site.

While we can’t tell you exactly when you’ll receive your Welcome email, we will update this blog post to let you know whenever a new batch of Welcome emails has been sent out, so keep visiting the Insider and watching our Twitter feed.

You’ll be pleased to know that we've sent another group of Welcome emails out in the last hour.