Blizzard has released a News Post, announcing that Inscription will be available at the release of the Pre-Patch and how players can learn Inscription.
Scribes live and die by the pen, weaving words of power into parchment through sheer magic. Those who choose this path learn to craft the following:
Scrolls: consumed on use to increase various attributes and other effects.
Tomes: powerful off-hand equipped items favored by spellcasters.