Doesn''t seem to me that much of it is expansion, more so than replacement of turboprop service. CO Express had to be killing them at AEX and LFT, not to mention that they''re pushing to make DFW all-jet (which makes sense given the closure of the ASA Brasilia maintenance base at TXK). BOS-PWM/BTV is opportunistic with AA Eagle ending the former route and pulling completely out of BTV. ATL-PHF is designed to make life more interesting for AirTran, of course. And GSP-MCO, well, they have to put those CHQ ERJ''s somewhere.
I agree the timing is odd but when else are you going to announce it?