Might be another major update, with purpose of tweaking RD...I do know they confirmed via Twitter that there will now be 4 picks for a win and 2 for a loss in RD starting this weekend's cycle...also guessing they're adding in the much-requested energy boost card drop for KotR possibilities into the shards.
Don't think they'll do anything major other than that, maybe just a few other very minor tweaks. We'll know in a few hoursm though, I guess.