I remember reading that the xp curve will be smoothed in an upcoming release. How will this impact the boxes?

1) Will the box take me to level 15 (effectively giving me more xp after the change than now)
2) Will the box give me the same exact XP as now meaning that I will end up below 15 after the changes?

Thank you. I am sure you folks thought of this with the changes right around the corner. I can't find any information about how the boxes will be impacted.

Thank you for continuing to offer such great new things in the game and the store.