Through reading thousands of posts throughout numerous topics and threads I have taken all of this into account and come up with what I believe is the blueprint for Book 7.

JK has left many clues throughout the books that support all of these theories.

7th Book Theory

Harry will return to the Dursley's for the final time. He will stay there until he turns 17. On his birthday he will leave the Dursley's forever. He and Ron will go take their Apparition Test and both will pass. Harry will then stay with the Weasleys until Bill and Fleur's wedding.

The wedding will go smoothly at first. Harry and Ginny will be a little weird around one other since they both still have feelings for each other. Harry will stay true to his word and he will resist the temptation to get back with Ginny.

The wedding will then be disturbed and Percy Weasley will die protecting his mother, thereby redeeming himself. Percy will be the only one hurt, but everyone will be severely unnerved by the attack.

After the summer the trio will all return to Hogwarts, Hermione and Ron will convince Harry to go back. Slughorn will be the Slytherin Head of House, Hagrid will be the Gryffindor Head of House and McGonagall will do an excellent job running the school despite the lower enrollment.

McGonagall will help Harry continue his search for the remaining Horcruxes, she will allow him to consult Dumbledore's portrait. Harry will then seek out the locket first, Dumbledore will crack the RAB code and tell Harry to check #12 Grimmauld Place. Harry will find the locket and destroy it.

Harry will then go to Godric's Hollow, where he will find out more about his family. Ginny will insist on going with him, and despite Harry's best efforts she will come with him. Without finding a Horcrux there he will seek out Hufflepuff's cup. Hermione will help solve this mystery. They will find the cup and destroy it also.

Harry and Hermione will eventually realize that the item of Gryffindor's is the sword, thanks to Ron. He will then destroy that. Leaving only Nagini.

Harry must find Voldemort in order to find Nagini. Harry will come face to face will Voldemort in the Ministry of Magic. Voldemort will try and kill Ginny, but she will be saved by Wormtail, who owes Harry his life. Voldemort will kill Wormtail and continue to go after Harry and his friends. Snape will be the next to come to the groups aid, he will distract Voldemort and die doing so.

Malfoy will see that he is not truly evil and will return to the good side, but it will take the entire book for him to realize this.

Fawkes will come to Harry's aid and kill Nagini. Harry will then try and finish Voldemort off since all of the Horcruxes are gone.

What Harry does not know is that Nagini was not a Horcrux and Harry himself is the final Crux. However, Voldemort will go after Ron and Hermione, but Harry will sacrifice himself to save them. This will create a protective charm just like Harry's mother used. When Voldemort tries to kill Ron and Hermione the spell will backfire and kill Voldemort for good.

The epilogue will detail Ron and Hermione's wedding and their lives together, as well as Bill and Fleur's life together. It will show Neville returning to Hogwarts to teach Herbology. McGonagall will continue as Headmistress for a long time and create her own legacy at Hogwarts. Hagrid will live happily with Madame Maxime. The wizarding world will flourish since Voldemort no longer reigns supreme.
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Special Thanks To: Dainsie and blackskies for contributing to this theory...

That is my theory, tell me what you guys think... Also, post your own complete theories...