You probably already have read a thousand different blogposts discussing this particular subject. And I'm sure you've been seeking the whole Internet for information. And you're without a doubt so fricking excited for this mysterious announcement J.K. Rowling is going to make. Now, if you don't know what I'm talking about, please climb out from the rock you've been living under. This is the biggest thing that has happened in ages! (No, I'm not going to tell you what I'm talking about, just google Pottermore and you'll get to know everything you need.)
Well, what do I believe that this thing is? I'm definitely thinking some sort of social network or roleplaying thingie. J.K. Rowling has told us that it's not a new Harry Potter book, and the encyclopedia would be a new book. Right? And Pottermore would be a weird name for an encyclopedia. I think the name is referring to Potter Multiplayer Online Role-playing Experience. And if you go to this website, on which there's information about the Pottermore trademark, the "goods and services" for Pottermore is:
Providing multiple-user access to a global computer information network; providing on-line chat rooms and electronic bulletin boards for transmission of messages among users in the field of general interest; providing on-line communications links which transfer the web site user to other local and global web pages; providing on-line facilities for real-time interaction with other computer users concerning topics of general interest.
Sounds like a social-community-site-thingie! One thing's for sure, I'll be sitting at my computer and watching the youtube page as it counts down the last seconds ..
Update: I don't mean that the only purpose of the website would be networking. I believe that there's going to be infromation about the characters, a place to upload fanfictions, maybe a small enyclopedia, places to buy the books, chat forums etc .. I think it will be like all things concerning Harry Potter in one big, awesome place :)