Masks can now be purchased for 2 x Tricky Treat from Farina (H) and Spanky (A) in addition to having a chance to be looted from the Loot-Filled Pumpkin. Their chance to be looted from Handful of Treats remains the same.
The Hallow's End masks are no longer equipped in the head slot. Instead, the player right-clicks the mask and receives the corresponding buff. You get to wear the mask without sacrificing a gear slot like in previous years. :) Also, the mask only lasts for the duration of Hallow's End but the spell buff it applies to the player will remain indefinitely unless cancelled by death or by the player.