Diablo – Are magical stat bonuses working in Diablo 3

Not at this time.

At least I have not received any for my previously purchased authenticator (that I bought for WoW).

I should also note that the core hound I got for my authenticator in WoW was bind on account, so it was available across all of my WoW characters and their servers. If something were done in Diablo III, like the angel wings and dyes for purchasing the collector's edition, it would probably be the same way.

Strength

• Each point increases Barbarian's damage by 1%
• Each point increases armor by 1 for every class

Vitality

• Each point increases your Life (dependent on your level, higher level=more vitality per point. See below for formulas) for every class

Life when player level < 35 = 36 + 4 × Level + 10 × Vitality

Life when player level ≥ 35 = (level - 25) × Vitality

Source

Intelligence

• Each point increases Wizard's and Witch Doctor's damage by 1%
• Each point gives .1 to all resists for every class

Dexterity

• Each Point also increases Monk's Armor by 1 with the Seize The Initiative passive unlocked at level 20.
• Each point increases Monk's and Demon Hunter's Damage by 1%

• Each point increases chance to dodge for every class

    Dex range     Dodge% per point of Dex
  
   1    - 100             0.100
  
   101  - 500             0.025
  
   501  - 1000            0.020
  
   1001 - 8000            0.010
  

Source