If you purchase the Digital Deluxe, you'll also receive these goodies:

Legacy of the Void™ Goodies 
Battle for Aiur with three unique Protoss-inspired portraits and a new unit skin for StarCraft II, an Archon pet for World of Warcraft, a Protoss-themed card back for Hearthstone, and a Probe pet and Protoss transmog for Diablo III. Plus, you'll be the most intimidating player in the Nexus with your awe-inspiring Void Speeder Mount.

Heart of the Swarm® Goodies
Represent your love for the Swarm with three Zergified portraits, a Torrasque unit skin, and 12 exclusive decals. You'll also get a World of Warcraft Baneling pet and awesome Diablo III loot -- a set of Blade Wings and a Banner Sigil.

Wings of Liberty® Goodies
Destroy the Dominion in style with four Terran-themed portraits, a Thor unit skin, and 9 unique decals for StarCraft II. You'll also have a World of Warcraft Baby Thor pet will keep you company as you adventure through Azeroth.