Meanwhile, other bookshops told us their phones are red-hot with pre-orders and plenty of people are popping in stores to make sure they don't miss out in June.
Borders started taking orders the day the release was announced.
And Waterstone's have been letting fans order since last July.
We also found out Waterstone's are going to have special activities and "massive in-store events" on 21 June.
Keep checking back here for info on how Book 5 is selling and where some special events might happen on 21 June!