The story goes on!...

I googled on Harry Potter and stumbled accross these information about the aftermath of the 7th book. It was good to read... Here goes:

Rowling's commentary and supplement

In an interview, online chat, the Wizard of the Month section of her website, and during her 2007 U.S. Open Book Tour, Rowling revealed additional character information that she chose not to include in the book. She stated that:

Harry becomes an Auror for the Ministry of Magic, and is later appointed head of the department. He keeps Sirius's motorcycle, which Arthur Weasley repaired for him, but he can no longer speak Parseltongue after the destruction of Voldemort's soul fragment within him.

Ginny Weasley plays for the Holyhead Harpies Quidditch team for a time, leaves to establish a family with Harry and later becomes the lead Quidditch correspondent for the Daily Prophet.

Ron Weasley works at George's store for a time, Weasleys' Wizard Wheezes, then joins Harry as an Auror.

Hermione finds her parents in Australia and removes the memory modification charm she had put on them for safety. She initially works for the Ministry of Magic in the Department for the Regulation and Control of Magical Creatures, greatly improving life for house elves and their ilk. She later moves to the Department of Magical Law Enforcement and assists in eradicating oppressive, pro-pureblood laws. She was also the only member of the trio to go back and complete her seventh year at Hogwarts.

Dumbledore's relationship with Gellert Grindelwald extended beyond mere friendship; indeed, Rowling has revealed that "Dumbledore is gay, actually", and harboured romantic feelings for Grindelwald.

After his death, Voldemort is forced to exist in the stunted form Harry witnessed in the King's Cross limbo; his crimes were too severe for him to become a ghost.

Rowling also explained the fates of several secondary characters:
George Weasley continues his successful joke shop. George married Angelina Johnson and has two children: a son named Fred, in memory of his late twin brother, and a daughter, Roxanne.

Luna Lovegood searches the world for odd and unique creatures. She eventually marries Rolf, a grandson of the famed naturalist Newt Scamander. They have twins called Lorcan and Lysander. Her father's publication, The Quibbler, has returned to its usual condition of "advanced lunacy" and is appreciated for its unintentional humour.

Percy Weasley married a woman named Audrey and had two daughters, named Molly and Lucy.

Firenze is welcomed back into his herd, who finally acknowledge the virtue of his pro-human leanings.

Dolores Umbridge is arrested, interrogated, and imprisoned for crimes against Muggle-borns.

Cho Chang went on to marry a Muggle.

Neville Longbottom becomes professor of Herbology at Hogwarts, marries Hannah Abbott and lives in a flat above the Leaky Cauldron, where she is the new landlady.

Besides Victoire Weasley, Bill and Fleur Weasley have a younger son and a younger daughter, named Dominique and Louis.

On her website, Rowling posted a Weasley family tree, showing that Harry's children's full names are James Sirius Potter, Albus Severus Potter, and Lily Luna Potter.

There have been transformations in the wider wizarding world:

Kingsley Shacklebolt is the permanent Minister for Magic, with Percy Weasley working under him as a high official. Among the reforms introduced by Shacklebolt, Azkaban no longer uses Dementors. Consequently, the world is now a "much sunnier place". Harry, Ron, and Hermione have also been instrumental in reforming the Ministry.

At Hogwarts, Slytherin House has become more diluted and is no longer the pure-blood bastion it once was, although its dark reputation lingers.

Voldemort's jinx on the Defence Against the Dark Arts position is broken with his death. There is now a permanent Defence Against the Dark Arts teacher. Harry comes to the Defence Against the Dark Arts class to lecture several times a year.

A portrait of Snape, who briefly served as Hogwarts Headmaster, does not appear in the headmaster's office as he abandoned his post. Harry ensures the addition of Snape's portrait, and publicly reveals Snape's steadfastness.

Now I can't wait the 6th series of the film to come out!