With the latest PTR patch, Hodir’s HP was nerfed. While his HP was reduced by 11 million HP, the amount of time before he destroys a crate was increased to an yet unknown amount. There were no changes announced to the NPCs.
Basically this means, the boss becomes even easier on normal more and the insane dps race in Hard modes was reduced. Additionally the Flash Freeze area effect is better visible now for players with “Projected Textures” video options turned on.
Also the duration of the Storm Power (100% critical chance buff, which is added by one of the Elemental Shaman NPCs) has been increased from 15 to 30 seconds.