Details and Rulespack coming very soon!
At this point in time (even before the official release) it is just too early to publish a fully fledged tournament-pack. We want to make sure we cater the tournament-players in the best way possible and will ensure that the rules pack will be set up in a way, that participants will have a proper gaming-experience in our events. In general we reserve the right to apply comp and house-rulings but we aim for doing that very carefully and only when a change to the official rules is absolutely warranted to keep up the spirit of tournaments in a proper way.
In general we will play common size and Legacy Factions will be valid. All the rest will be ironed out once we have the books at hand :)