I don't think they're finished. I too, sorta expected Harry to break up with Ginny, it's a very Harry thing to do. IC. But Ginny is too stubborn to listen to Harry. She'll be back.
By the way, it doesn't seem that Ginny knows about the Prophecy or the Horcruxes. Will she ever? DD said only to tell Ron and Hermione and Harry is so insistent on taking what DD says literally...
Did anything think DD bursting into flames was weird? And the phoenix shape going into his flames? Was that Fawkes? I really want it to be explained.
HOW DARE UMBRIDGE SHOW UP AT THE FUNERAL! DIE!
JKR says Umbridge will be back. I hope Hermione kicks her butt again.
Rufus Scrimgeor is mean too. But Harry quoting CoS...so sweet. I nearly cried.
And Ron and Hermione are going to go with Harry! YES! Near the end, I was so scared there would be no more Ron and Hermione. But of course, they are not going to let Harry be stupid. I was so happy they were coming along. Yes!
Note that this is the first HP book NOT to end with Harry getting off 9 3/4. It's...kinda scary. Shows everythings changing.
Things to look forward to in book 7
1. Ron and Hermione at the Dursleys. That will be SO fun.
2. Trio hunting down Horcruxes. GO TRIO! HARRY RON AND HERMIONE FOREVER!
3. The Final Showdown.
Book Seven will SO ROCK!