Inscription, next week.

Or whenever. The big deal is that these are the changes we can expect in 4.0.1.

I've said it before: I predict a huge run on glyphs when 4.0.1 goes live. People will compulsively buy complete sets of glyphs (the new interface even shows which ones are missing, leaving big gray holes in the screen, which compels people to buy), and a lot of the glyphs are changing in their utility. People who haven't played in a while will come back to the game. People will buy sets of glyphs for their alts. It's going to be crazy. So, prepare yourself.

I've shamelessly snatched and reformatted this from Ro's post on the blizzard forums.

All glyphs require 3 inks to make instead of 1 so fill your stock up now. Do not wait for patch day, because your inks will make 1/3 as many glyphs on that day.

• Many glyphs are changing to new glyphs. If the itemid is being recycled, they will convert in your bags to the new glyph.
• Many glyphs are being removed and have no replacement, they'll magically change to [Charred Glyph]s vendor trash (50s sell price). Liquidate your position in these glyphs ASAP, but remember that after the patch, their vendor price increases to 50s (basic glyph vendor price is 1s). So if someone else is liquidating them for less than 50s and you have bag space, buy them now and vendor them later.
• You'll be able to train a few new glyphs, which use inks available today: Glyph of Blind, Glyph of Feral Charge, Glyph of Intercept, Glyph of Faerie Fire, Glyph of Tiger's Fury.
• Glyph of Living Bomb is unclear at this point - the current glyph of living bomb is being converted to a glyph of slow, and the new one might come from research.
• The glyph of colossus smash is trained, but requires blackfallow ink.
• Jessica Sellers treats Ink of the Sea as the top-tier ink in 4.0, but in Cataclysm it's Blackfallow ink (so you cannot trade in Ink of the Sea after cataclysm, but can after 4.0).
• Similarly, there are two "erasing powder" recipes available to scribes. One requires midnight ink, and one requires blackfallow ink. This is the reagent that scribes make which allows players to juggle their glyphs. My theory is that the midnight ink version will be available from 4.0, but disabled when cataclysm goes live. So stock up on some cheapie herbs and make a bunch of midnight ink if you can- erasing powder may well get overlooked in the rush.

Glyphs becoming charred glyphs (vendor trash):

• Glyph of Arcane Explosion
• Glyph of Barbaric Insults
• Glyph of Dark Command
• Glyph of Disease
• Glyph of Fire Blast
• Glyph of Fire Ward
• Glyph of Icebound Fortitude
• Glyph of Last Stand
• Glyph of Mage Armor
• Glyph of Mana Gem
• Glyph of Possessed Strength
• Glyph of Rapid Rejuvenation
• Glyph of Scorch
• Glyph of Siphon Life
• Glyph of Survival Instincts
• Glyph of Taunt
• Glyph of Unholy Blight
• Glyph of Volley

Glyphs changing to new glyphs

Glyph of Aspect of the Viper -> Glyph of Concussive Shot
Glyph of Avenger's Shield -> Glyph of Focused Shield
Glyph of Avenging Wrath -> Glyph of the Ascetic Crusader
Glyph of Blessing of Wisdom -> Glyph of Insight
Glyph of Blocking -> Glyph of Shield Slam
Glyph of Blood Strike -> Glyph of Blood Boil
Glyph of Bloodrage -> Glyph of Berserker Rage
Glyph of Bloodthirst -> Glyph of Bloody Healing
Glyph of Charge -> Glyph of Long Charge
Glyph of Claw -> Glyph of Ferocious Bite
Glyph of Corpse Explosion -> Glyph of Path of Frost
Glyph of Curse of Agony -> Glyph of Bane of Agony
Glyph of Dark Death -> Glyph of Death Coil
Glyph of Divine Storm -> Glyph of Templar's Verdict
Glyph of Enraged Regeneration -> Glyph of Intimidating Shout
Glyph of Eternal Water -> Glyph of Mana Shield
Glyph of Execution -> Glyph of Bloodthirst
Glyph of Explosive Trap -> Glyph of Master's Call
Glyph of Flash of Light -> Glyph of Word of Glory
Glyph of Frost Armor -> Glyph of Conjuring
Glyph of Frost Trap -> Glyph of Ice Trap
Glyph of Frost Ward -> Glyph of the Monkey
Glyph of Ghostly Strike -> Glyph of Revealing Strike
Glyph of Growl -> Glyph of Solar Beam
Glyph of Hamstring -> Glyph of Piercing Howl
Glyph of Heroic Strike -> Glyph of Heroic Throw
Glyph of Holy Light -> Glyph of Divine Favor
Glyph of Hunger for Blood -> Glyph of Vendetta
Glyph of Hunter's Mark -> Glyph of Misdirection
Glyph of Hymn of Hope -> Glyph of Divine Accuracy
Glyph of Ice Armor -> Glyph of Pyroblast
Glyph of Lava -> Glyph of Lava Burst
Glyph of Lesser Healing Wave -> Glyph of Totemic Recall
Glyph of Living Bomb -> Glyph of Slow
Glyph of Mana Tide Totem -> Glyph of Grounding Totem
Glyph of Mind Control -> Glyph of Psychic Horror
Glyph of Mind Sear -> Glyph of Spirit Tap
Glyph of Mocking Blow -> Glyph of Demoralizing Shout
Glyph of Multi-Shot -> Glyph of Silencing Shot
Glyph of Nourish -> Glyph of Starsurge
Glyph of Pestilence -> Glyph of Resilient Grip
Glyph of Plague Strike -> Glyph of Pestilence
Glyph of Quick Decay -> Glyph of Lash of Pain
Glyph of Raise Dead -> Glyph of Raise Ally
Glyph of Remove Curse -> Glyph of Cone of Cold
Glyph of Rending -> Glyph of Slam
Glyph of Righteous Defense -> Glyph of Righteousness
Glyph of Seal of Command -> Glyph of Rebuke
Glyph of Seal of Light -> Glyph of Seal of Insight
Glyph of Seal of Righteousness -> Glyph of Dazing Shield
Glyph of Seal of Vengeance -> Glyph of Seal of Truth
Glyph of Seal of Wisdom -> Glyph of Light of Dawn
Glyph of Searing Pain -> Glyph of Soul Swap
Glyph of Sense Undead -> Glyph of Truth
Glyph of Shadow -> Glyph of Power Word: Barrier
Glyph of Shield of Righteousness -> Glyph of Shield of the Righteous
Glyph of Spiritual Attunement -> Glyph of Divine Protection
Glyph of Succubus -> Glyph of Seduction
Glyph of Totem of Wrath -> Glyph of Shamanistic Rage
Glyph of Trueshot Aura -> Glyph of Kill Command
Glyph of Unbreakable Armor -> Glyph of Pillar of Frost
Glyph of Vanish -> Glyph of Poisons
Glyph of Vigilance -> Glyph of Furious Sundering
Glyph of Vigor -> Glyph of Kick
Glyph of Water Elemental -> Glyph of Dragon's Breath
Glyph of Water Mastery -> Glyph of Water Shield
Glyph of Water Shield -> Glyph of the Arctic Wolf
Glyph of Whirlwind -> Glyph of Raging Blow
Glyph of the Beast -> Glyph of Trap Launcher
Glyph of the Ghoul -> Glyph of Raise Dead
Glyph of the Hawk -> Glyph of the Dazzled Prey
Glyph of the Pack -> Glyph of Aspect of the Pack
Glyph of the Wise -> Glyph of Justice

And that's it. Good luck in the changeover. Personally, I've withdrawn most of my glyphs from sale right now. I want to have the stock to survive the run on Tuesday.

A last hint for people who got this far: if you're stocking up, remember that post-patch glyphs will require 3 inks to craft. Which means any glyph that is currently selling for less than 3x ink cost is likely to be worth buying prepatch. I've crafted a TON of glyphs that I think will be useful, but I'm also supplementing my stock by purchasing a lot of glyphs from the sub-5g market. At that point, it's easier to buy stuff up than to mill-trade-craft. I've got an extra bank alt ready for overflow stock even.