General Facts Not Disclosed in the Books:
~Harry's middle name is "James."
~ Hagrid, Lily, and James were in Gryffindor.
~ Lily Potter's maiden name was Evans.
~ There are about a thousand students at Hogwarts.
~ James Potter was a Chaser on the Gryffindor Quidditch team.
~ Hermione's birthday is September 19th, Ron's is March 1st.
~ James Potter inherited lots of money, so he didn't need a well-paying profession.
~ The fifth book will be shorter than the fourth. The fourth book will most likely be the longest of the series.
~ James Potter inherited the invisibility cloak from HIS father.
~ Witches and wizards have longer life spans than muggles.
~ The Gringott's goblins' return the muggle money they they acquire back into circulation.
~ The approximate value of a Galleon is about five pounds ($7.30 or 8.00 Euro), though the exchange rate varies.
~ Dumbledore is 150, McGonagall is 70 (and is really an old softy, just doesn't act like it), Snape is 35 or 36.
~ The happiest people do not become ghosts (therefore we can take it that ghosts are people that died while sad, angry, etc. Myrtle was teased, Nearly Headless Nick didn't have his head completely chopped off, the Bloody Baron was...lonely?)
~ The Hogwarts teachers do not stay at Hogwarts during the Christmas holidays. Filch, Hagrid and Dumbledore do.
~ To remove Dudley's tail that Hagrid gave him in the hut on the rock, the Dursleys went to a private hospital where the staff was very discreet, and said that a wart had got out of control.
~ Azkaban is in the north of the North Sea. A very cold sea.
~ You can do unfocused and uncontrolled magic without a wand (like when Harry blows up Aunt Marge), but to do really good spells you need a wand.

In Book 5:
~ Professor Lupin makes an appearance.
~ Hermione is made prefect.
~ Harry tries to kill Voldemort but fails
~ The book will be titled "Harry Potter and the Order of the Phoenix"
~ A character named "icicle" will appear.
~ Hermione and Ron will start dating.
~ Will be released in LATE 2002
~ Fleur will become a Hogwarts teacher
~ Prof. Lupin makes a return!
~ All is revealed about Lily Potter
~ We find out why Voldemort killed Lily and James
~ Harry and his friends are 15 years old
~ Ginny Weasley will die. (JKR has said that in a future book a Weasley will die and in book five one of Harry's "fans" will die.) *Submitted by Mariwyn Aisling*
~ Hermione likes Harry because she did kiss him at the end, and it is heard from J.K. Rowling that only Ron likes Hermione but Hermione likes Harry. *Submitted by Le-Ann*

Book 6:
~ The book will focus on Prof. Snape and we will learn something very important about Snape.
~ Colin Creevey or Dumbledore might be killed.
~ Harry and Cho will date.

Book 7:
~ Hermione is made "Head Girl".
~ The last word in the title of the book is "scar".
~ The green flame torch is used by Harry to finally defeat Voldemort.
~ Harry's eyes play an important role in the book -- it is particularly important that he has is mother's muggle-born eyes...
~ One of Harry's classmates becomes a teacher!
~ We find out we will never get to meet Harry's parents.