This is what's gonna happen on the last Harry Potter Book.. Spoilers!!  

The story will be like this -- Dumbledore, using his awesome powers of blatant copyright infringement, reappears alive in the Fangorn Forest as Dumbledore the White. Snape is gonna be revealed to be Voldemort's son. Dumbledore marries Aunt Petunia. Snape gets angry over this, and therefore Snape kills Dumbledore AGAIN. Finally, it is at last revealed that Harry Potter was not born to James and Lily Potter, but rather was conceived in a one-night stand between Snape and Aunt Petunia. Therefore Dumbledore is Harry's step-father and so is Snape and Uncle Vernon (the former husband). We also learn that Voldemort is half African American. This spins Harry into a personal crisis in which Harry questions his ethnicity. Harry then has a mental breakdown, starts wearing bling, and adds "izzle" to the end of every sentence.

In few last chapters, Jesus himself appear as guest character, leading an army of the righteous in a crusade against all magic users, culminating in Harry's execution by hanging. In a postscript, Hogwarts is purified and converted to a megachurch under the pastorship of Rev. Rod Parsley, the hippogrifs are captive-bred for poultry, Hedwig creates a political stir over logging in the Pacific Northwest, and Dobby is relocated to a Malaysian sweatshop.

Now dont get all mad because im just fooling around..lol.