I have no idea but it'd be pretty cool if we do.
The dust you get from common cards are so negligible I can't imagine even the greediest company do what you're speculating, so it's probably just a coincidence.
They're really pushing for that minion combat.
Since it says, "whenever you summon" does that mean it doesn't work with cards you play from your hand, or does that mean it also works with cards you play from your hand?
Priest being my favourite class, it really, really sucks that it's being guttered so hard when it's already down, but otherwise I'm very glad for the changes they've been making for Hearthstone. I'm glad to see Brightwing enter the game and some of those Classic cards are insane.
I just hope this means the Priest class will be getting something akin to a workable "Shadowform" card in the upcoming expansion.