None yet. But he said 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 love her! >:D
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 question the anime isn't over yet :p