It seems to be a minor change, but interesting is the date it went into effect:
Although it is known for long that the Kingdom Ministry is not prepared by the Writing Dept. but by the Service Dept. this has only recently been officially acknowledged by a change of copyrights. The copyright for the km is no longer hold by the WTBTS of Pennsylvania but by the Christian Congregation of Jehovah's Witnesses.
Guess which issue of Our Kingdom Ministry is the first to bear the new copyright? Exactly, the nice August 2002 issue. This fine insert is the first issued under the new copyright.
LL