There is a letter from the VP of SWA FltOps to all SWA pilots that states that 16 717s will go in the 2nd half of 2013, 36 in 2014, and 36 in 2015.
What happens after 1/1/15 when the pliots on those remaining 717's can exercise their system seniority and leave the aircraft to fill vacancies created by retirements elsewhere in the SW system? Nobody in the 717 now will have an equipment lock by 1/1/15.