I understand the writers were debating about the Kane vs. Umaga match up until the last minute.
Either way, Kane has arrived in Smackdown and had a brief encounter with the MVP.
With the World title hotly pursued by Batista, Lashley and Finley and Benoit as the new US champion, I don't know how Kane can fit into the title picture. Perhaps he doesn't need to get into title chasing or re-uniting with the Undertaker immediately. He can have a program with MVP or Kennedy (is Kane the one he hasn't beaten in Smackdown?). It makes sense for him to work out something with Kennedy since he 'beat' Undertaker.
Speaking of Kennedy, WWE is trying to move wrestlers between Raw and Smackdown without the draft. This is new.