Three cheers for open seating!! We previously posted about how we hoped Southwest would not change their A, B, C boarding because we've perfected how to work the system.
A Numbers Game
Now, Southwest has announced that only a slight modification will be made to the notorious "cattle call". A, B, and C boarding passes will still be issued. However, passengers will now receive a number as well as a letter when printing their boarding pass--a sub-set of the letter categories, if you will.