The longer it goes with no announcement the more I have a feeling that it's going to be something more complicated than "Bob Smith is our new drummer." Like they'll have a touring guy and a studio guy, or multiple guys that they're working with for both, or something computerized.
I don't know how the whole industry works, but if they picked a guy a month and a half ago and they want to tell everyone who it is, what could the label possibly delaying the announcement this long for?