Actually the lead thing has been brought up before. Here's the answer:
We didn't get the time to explore it in Chapter 13 but the lead and gold armbands aren't made of actual gold and lead, they merely look like it. So no one's getting poisoned.
You can see the full answer here.
As for the release... we don't have it yet, I don't think. The lads are hard at work on it, that you can be certain. Rest assured 0.5 WILL BE WORTH THE WAIT.