OK, well Breaking Dawn is officially the last book in Bella's point f view. Then she is going to write other books in others point of view...such as Midnight Sun. I am really excited for both!!!
Well, after Eclipse there is going to be Breaking Down. Then Meyer is thinking to do another series that will have to do with Edward, not Bella. I can't wait for Breaking Down to come out.
At the present press time, no.
There will so far be four novels [including the ones already out] from Bella's point of view.
And one from Edward's. :]
Maybe if it's gets enough review, Stephenie might consider writing more on the series.
But nothing yet is known.