One of the things Patch 3.1 is supplying in spades is glyphs and glyph changes. Every class is getting a ton of them, and it's really hard to keep up with them there are so many. Priests are coming out alright so far through the whole process, with a lot of our current glyphs being improved and our new glyphs being legitimately useful, if situational. Let's see what's new, shall we?
Glyph of Fade - Reduces the cooldown of your Fade spell by 9 sec. (Old: Increases the duration and cooldown of your Fade spell by 50%.)
This is massively better than what it was previously, and I suspect that this will become a popular Shadow Priest glyph in PvP. Two points in Veiled Shadows plus this glyph means a 15 second cooldown on Fade. Every 15 seconds, a Shadow Priest will be able to clear all movement impairing effects, assuming they have Improved Shadowform. That's pretty friggin' sweet.