New sideletter is out -

Reduces Southwest Airlines' ability to Near International and Trans-Border codeshare and further restricts existing agreement to 2.25% of total ASMs and limits partnerships to Volaris-only and Mexico-only
Beginning January 2016, the 2.25% Near International and Trans-Border codeshare restriction is further reduced to 2% of total ASMs (one year look back to 01/01/2015)*