Just open HOTS and received one pack (1 chest) rare winter veil loot chest from Blizz.
Got nothing from it, just lost 2K gold on rerolls, but maybe someone else will be lucky enough to get some purple
Does not showed up in Loot section in your game.
Need to click small gift box icon on battle.net app and claim it.
See picture for more details.
As usual, GL HF
P.S. hope this time it's a right forum, huh?