We've reviewed the hardcore feedback thread (link) and have come up with the following:

Ultimately, hardcore gameplay will be the standard gameplay with these select changes:
* No auction house, gifting, trading, or stash
* PvE permadeath (one life)
* Alternate character portrait
* Purple name
* No advancement pack gear

There will be no cost to create a hardcore character.

If you die in PvE, you'll be able to convert your character to a standard character for Platinum (price has not been set). You'll be able to play PvP with a hardcore character without penalty.

Leaderboards will only consider active hardcore characters (not dead).

There is no ETA for this. When we announce these changes are ready to go live in a future preview, we'll refund any hardcore resets with a certain time period.

Any questions? Did we miss anything? Let us know what you think!

-ALS