Very likely. There will be no way a contract will be announced on June 15th.
Smisek's EGO will never allow the pilots to win...i.e. set a hard date for completion and have it come to fruition.

The contract could be 99.9% complete but he will play the delay game a little bit to bait the group to some sort of action then hello lawsuit. A successful lawsuit will make him feel like he asserted his power over us...he likes it and in his mind he needs to feel he won.

As always, its about power, control with ego thrown in...not about money.