I see that some places already know the potential games. Last year and this year, we in Florida don't have any idea what games are going to be used.
While the game list surprise is interesting, I think all competitors knowing the game list would help people formulate game picking strategies and learn a little about the game ahead of time, which is not necessarily a bad thing-particularly for this caliber of tourney. With so many games out there, nobody can know all of the subtleties of each game.
The practice session is of course helpful, and is a time where many pinball players are scrambling searching for game info and papa videos on their smart phones and tablets. Sometimes knowing what sequence lights a 1000 point spinner on some obscure EM can make a world of difference.
In any case, looking forward to it!