The latest round of glyphs look very interesting. The glyph list by prime, major, and minor classifications were released into the wild for Shaman as well as another lesser, filthier class. Prime glyphs are the newest category of glyphification, adding an additional three glyph spots for prime-type glyphs. The prime glyphs generally fall into the category of X does Y more. Here are those relevant to enhancement.

Feral Spirit - Your spirit wolves gain an additional 30% of your attack power.

Fire Elemental Totem - Reduces the cooldown of your Fire Elemental Totem by 5 minutes.

Flame Shock - Increases the duration of your Flame Shock by 50%.

Flametongue Weapon - Increases spell critical strike chance by 2% while Flametongue Weapon is active.

Lava - Your Lava Burst spell deals 10% more damage.

Lava Lash - Increases the damage dealt by your Lava Lash ability by 20%.

Lightning Bolt - Increases the damage dealt by Lightning Bolt by 4%.

Stormstrike - Increases the Nature damage bonus from your Stormstrike ability by an additional 8%.

Windfury Weapon - Increases the chance per swing for Windfury Weapon to trigger by 2%.

There's a lot to choose from in there. Leading contenders are Feral Spirit, which will probably end up being a must-have, Windfury Weapon, Lava Burst, and Stormstrike. Glyph of Stormstike could continue to be a possibility because we still apply a debuff to our target increasing nature damage, which includes Lightning Shield, Lightning Bolt, and Earth Shock. This is going to come down to sims to see how it plays out versus some others.

Glyph of Flame Shock in its current incarnation increases the critical strike damage by 60%. The change to increase its duration by 50% is pretty significant, but I doubt it will be viable against some of the other, stronger ones.

The Glyph of Lava Lash was increased from 10% to 20%, but LL is such a laggard in terms of damage I don't see that making much of a difference, especially given the statement that Blizzard does not want our glyphs to change our rotations. The only saving grace for this glyph could be in Improved Lava Lash. If searing plus LL proves to be the killer combo of Cata, then we might find ourselves glyphing for it.

As for Glyph of Fire Elemental, that will continue to be a situational glyph. I'm glad we'll have the opportunity to swap glyphs in and out without having to constantly have a new stack made. Fire Ele glyph is a great thing to have for long boss fights, and a must-have when those fights have adds. Heroic Halion anyone?

Lastly, I might be going out on a limb with Lava Burst being one of or prime choices, but it's such a powerful spell I'm willing to bet that the glyph will sim out as one of our top three prime choices.

As an aside, I'm actually rather disappointed at the inclusion of Lava Burst in Maelstrom Weapon procs. Yes it's a nasty spell. Yes it's another tool to add to the enhance toolkit. Yes it's going to add another layer of richness to the already complex enhance rotation that I love so much. These are all great things. But there's something very, very, uhm, how do I say this? There's something elemental about it. To me it doesn't fit in the enhancement way. I only say this only now, while it's pretty much baked in, and not going to go away because I fear that if it were to be removed there would be an enhancement lynch mob forming for me at Blizzcon. (Then you'd have to answer your real priest, readers!)

But really, I don't like it. To me it's something from the elemental kit that's been ported over to enhancement. Yes we struggle with proc-based abilities so LvB on MW gives us some extra umph when we do get a three-stack of MW, and that's great. But couldn't we get spell increases along with MW, or maybe an enhancement only spell for MW that would be irresistible to use? I'd call it Stoneystrike. A three proc of MW enables you to case Stoneystrike, instantly disabling your opponent in a fit of explicatives and critting their hair for 140% damage. Or something like that.