During the recent Season 5 PTR Campfire Chat, Blizzard shared some exciting news pertaining to several endgame bosses that will be receiving changes in Patch 1.5.0, including The Beast in the Ice!
The Beast in the Ice in PTR Patch 1.5.0
The Beast in the Ice will no longer require a Glacial Fissure Nightmare Sigil to summon, instead requiring Distilled Fear, and the boss dungeon layout is going to be shrinking.