Bluetracker
Tracks Blizzard employees across various accounts.
HSreplay shows that there is a large increase to how much Class Cards are offered in Arena starting from a couple of days ago.
Was going to comment in this thread but it had already been downvoted and I have proof to back up my claims, so I figured a new thread was the best way to inform people
Silvermoon Portal Grimestreet Outfitter Firelands Portal Flamecannon Potion of Madness Velen's Chosen Death's Bite Blood Razor
Chose these 4 cards split across 3 classes all that were from expansions that newly rotated in for the event so its easier to see the graph. All of them show a sharp increase in being picked that coincides with about a day ago. Anecdotally, players have been noticing an increase in class cards being offered. Increases of this magnitude do not happen over night unless Blizzard pushes a button. Related, Blizzard also patched in the Halloween costumes for DCA, so this might be related to said patch.
Most likely, in the next couple of days it will become much more evident that they did something to class card offering odds on HSreplay.
Iksar
Oh, Keaton already responded. Good job, Keaton!
Iksar
They were, I think the number was 3X if I remember correctly. I wasn't directly involved so that's why it's a little hazy. We normally do an increase during dual-class but for whatever reason the change didn't get checked into the build properly so we made a fix.
Chakki
We've adjusted class card offering rates for the duration of Dual Class Arena to be about triple what they were previously. Around half of the cards offered per draft should be class cards now.