the mentioned stat buffs separate them from the classic masks
they wouldn't release 4 races at once
this sounds like an allusion to the "leaked" (may or may not have been intentional) Goblin and Worgen masks that were found in PTR files in 2008, before the official announcement of Cataclysm, which lead to the jokeful addition of Ogre and Murloc masks in the next build.

Possible mask textures datamined in 2009, unless they update those:
http://static.mmo-champion.com/mmoc/images/news/2009/july/10128masks.jpg

Комментарий от godded

Gives 50 stamina when used.

Комментарий от Saliman

There are eight masks (one male and female for each of these four races) which are consumed on use and will give a stat buff that lasts for 30 minutes.

Murloc male and female masks give agility.
Ogre male and female give stamina.
Vrykul male and female give strength.
Naga male and female masks give intellect.

The agility, intellect and strength buffs increase their respective stats by 35 at level 85. The stamina masks appear to give 61 stamina at level 85. The buff lasts 30 minutes.
These costs 5 Tricky Treats each and come in stacks per five.

For the Alliance, there is a level 1 NPC standing outside of the gates of Stormwind called Spanky <Mask Vendor> which sells these. You can also buy all the playable races-masks from him for 2 Tricky Treats each, which you need in order to complete A Mask for All Occassions.

Комментарий от capitao

Stacks with buffs that provide stamina.

Комментарий от Behalter

This buff is removed if you use your Врайкульский рог для вина

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Мужская маска огра

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Мужская маска огра

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