Shadows & Light, the sixth book in the Warcraft RPG line and being written as we speak, includes epic material: specifically, epic progressions for all Warcraft core classes and for several prestige classes (as examples); many, many epic feats; and several NPCs -- heroes and villains -- from the setting's different eras (such as Thrall and Sir Anduin Lothar).
It also includes a template for immortal, near-divine beings, but perhaps that's not strictly "epic" ....
S&L is scheduled to release in early fall this year, which gives us time to look at the new SRD material and consider any adjustments we might need to make.