Does detective conan have an ending now?

No the creator is still 書く the seriers and hasen't realesd when it is going to end so this means we will have to wait a while for the ending.

no...i dont think gosho aoyama will end it easily... i think he himself loves it.he even added another character...

None yet. But he 発言しました in an interview that he already have the ending in his mind.
Whatever ending it is, I want Shinichi and Ran to be together and that Haibara will learn a lesson to back out of their relationship cos Shinichi will never 愛 her! >:D

I heard a rumor that he already wrote the end in 2007, but hasn't published it yet

No,Detective Conan is not over yet and it's probably far from over and I imagine it wouldn't end easily but to answer the 質問 the アニメ isn't over yet :p