He just posted the first game team selection and that match is on the 19th. Not sure where this should be, but this looked as good as any. The season is basically all the civs and all of their leaders. They run a series of matches with about a half a dozen civs in each. Only the AI's play and there is an observer (Sulla) that commentates. The top 2 move on to the finals. Eventually a number of matches are play to pick the all star leaders and they play a final winner. It is on deity on a pan map. People vote on several areas and try to get points for the best score. Things like 1st and second place in the game, year game ends and victory type and so on. Link to Sulla's YouTube pot.