Greetings all, as it will no doubt be buried in the locked thread, here's the details I've been able to collect about the new drops and their relative rarity.
I'm pretty sure I have all of the candy now. As you can see, the Rock Candy spawns much, much less than normal candy. It also doesn't give the "you could eat as much as you want" message. But it doesn't, as far as I can tell, appear to do anything else. Or does it...?
What are the relative drop rates of all the rewards; the following chart is an approximation. It is what I've ended up with over time, after the Naughty Twin has stolen some candy back again, not counting the other "Tricks!" but giving a percentage of the final loot you get to keep. This is at Grandmaster Begging;
My results are being posted here.
What does it mean for you the collector? I've a total of just over 2000 results at the time of typing this, and if you take the old and new results as a group, the new heads are dropping way, way less than the old... in fact they've been below 0.2% chance that the final result is a dev's head. However if you look at individual drops, they have only dropped once, 3 times individually in those results for me, but the other Skull On A Pike also dropped just once. it's tempting to wonder then if the individual odds are the same as that old reward, and it's just the odds of a Dev-Pike are so low because there's now nearly double the rewards it could be instead.
The patch notes mentioned there were other rewards apart from the heads on a pike. Unless there's something even rarer, or I've just been unlucky, I think they mean the Rock Candy.
These are the 3 artworks I've gained;
It's going to be a pain to grind out a complete set solo then; I did about 2 hours of constant trick or treating to get the results so far. Hope you find this useful, and when I next get stuck in, I'll update the total in the document above!