Company just put out a document on upcoming Displacements, the end of which says:

"Next steps/timeline

Denver –
We plan to announce the closure of the DEN 76T category in the next several weeks. Flight activity on this equipment type is simply not sufficient to support a base.
We’ve said for some time that we believe the DEN Airbus category is overstaffed. Similar to the IAH 737, this may not be evident because we’ve been forcing flying into the hub. However, we do not expect to announce DEN Airbus displacements at this time – we currently do not have enough clarity on future Airbus flying in DEN to take this action. We will monitor deployment plans for the recently announced purchase of used A319s, as well as pilot movement following the closure of the DEN 76T category. Either of these factors could require us to reevaluate."

"Houston –
In the next several weeks, we plan to announce the first of three successive IAH 737 displacements. We expect each displacement to be similar in size; however, we will stop and evaluate before proceeding with the next round. In total, we expect to displace between 100 to 150 captains and 35 to 50 first officers.
We are using summer 2017 flying projections to guide our actions, and are accounting for retirements and attrition that will occur between now and then. In doing so, we were able to significantly lower the number of displacements needed, which would have been around 218 captains and 115 first officers. Our goal is to impact as few pilots as possible, as well as avoid the need for any vacancies prior to summer 2017.

As always, we continue to work closely with Network Planning to search for opportunities in the flight schedule to mitigate some portion of these displacements."

Many more details are in the actual document, but these two paragraphs sum up where the rubber meets the road.