You can do that on wowhead right now (based on the beta, not any hidden internal build).
Just go to your class:
http://legion.wowhead.com/classes
In my case, I'll select Death Knight.
I get a page for Death Knights.
http://legion.wowhead.com/class=6/death-knight
Then I click on Glyphs.
I see 10 glyphs.
There are glyphs on Army of the Dead (I think this is Unholy?), Path of Frost (two mutually-exclusive), Wraith Walk (one for Blood, one for Unholy, one for walking--e.g., to jump over obstacles while in Wraith form), Anti-Magic Shell (one for Blood, one for Frost), and two for Raise Dead (which I'm guessing are both Unholy still?).
Once we know what spells each spec has, we should be able to tell which glyphs are for which specs.