Harry Potter- Present, Future

After reading the latest installment of the Harry Potter series, I’m thinking if “The Prisoner of Azkaban” still remains my favorite Potter book.
Thickly plotted, the book is very gripping. Each line has been carefully written and nothing has been overdone. Even though we stumble on whatever has already told here and there, the repetition enhances the overall effect.
When I read the “Order of the Phoenix”, I felt that my cousin’s hunch that JKR was losing her touch was true. But “The Half-Blood Prince” proves otherwise. Unlike the 5th book this one is not hazy. It has a definite direction. Everyone seem to have more control over themselves. Harry’s love life has been made more subtle. It seems that the main role of the book in the series is to connect old threads and draw new ones.
There is one part in the main plot that intrigues me- the behavior of Snape. Why did Dumbledore trust Snape so much? Is there a more valid reason for Snape to kill Dumbledore other than the Unbreakable vow?
So, what might happen in the next book? Since JKR is indicating that Hogwarts might not open next year, there is a lot of adventure expected in the next book. We might be seeing more of Snape. We will, obviously be seeing Harry trying to protect himself when Lily’s protection lifts and after Dumbledore’s death Voldemort will be very active. “R.A.B” might be a new character who might aid him in finding the remaining Horcruxes.
And we Potter fans might have to wait for a long time to find out what the last book will be called, Harry Potter and “the 4/5/6 Horcruxes” or “the final struggle” or some other name that we cannot figure out, and longer time to read it.