Why does Keira knightly and Orlando Bloom want to come out in the next movie?

There's been no official announcement about Keira Knightley and Orlando Bloom wanting to appear in any upcoming movie together. It's possible you're thinking of a specific film that they haven't been confirmed for, or perhaps it's based on fan speculation or rumors.

To get a clearer answer, you might want to specify:

* What movie are you referring to?

* Where did you hear about their potential involvement?

If you can provide more context, I can give you a more accurate response.