Has anyone actually seen the contract/agreement? All of the news reports that I saw said "dual-class" aircraft, which could include CRJ550's.

Besides, many others have pointed out that such agreements are commonly broken in this industry. SkyWest's 10-K has huge sections discussing how their contracts with mainline partners are subject to interpretation and disagreements about the interpretations are common, often ending in arbitration or litigation.

We'll all know soon enough, I guess.