So how does this affect the PvP side? Well, after the update this week -- presumably Thursday or Friday -- the Commander title will still exist, but gaining points for it will no longer be possible. It will be replaced by a new title so those who haven't maxed their Commander title won't be left out in the cold. Random Arenas will no longer promote to Team Arenas, and the Hero Battles Ladder will freeze.
Linsey has said that Team Arena will be "renamed and repurposed" for the new Sealed Deck format, and that the Hero Battles maps will be reused, but the only change indicated for this week is the removal of TA/HB. It looks like Sealed Deck and all the other PvP projects are still having finishing touches put on them, so we'll keep watching for them.
