Here's some info copied from the weekly FAQ's.
Q. Are there any aircraft types planned in base maintenance other than the 737?
A. For 2006, the CLT hangar plan is based on B737 C and Q checks (The Q check is an East heavy structural check similar to West’s D check). As we go through the merger process, we will be developing longer-range plans for all of the bases. We would like to have bases specialize on aircraft models but that might not be entirely possible and at least one of the bases might see a mix of fleet types.
Nada about ANY union, one union, the other union. So in my opinion, it doesn't put much credibility in the belief by some, of outsourcing all maintenance under the IBT contract. Sounds like they are looking to the FUTURE. Developing long range plans for ALL the bases.