Let's say for a moment that these are real. The specs proposed already have some form in the game, so really they're just adding a new way to use the abilities; not creating an entire new spec with all new tools.
Warrior - Dragon Roar; focuses on shouts, maybe gets a new avatar that looks like a draconid.
Mage - Blood; probably one of the few actual new specs.
Rogue - Deadened Nerves; already has everything there, just needs it switched on and arranged.
Druid - Already implemented, and should be used as the basis for what they would do. Guardian got (and still gets) most of the same things it already had when it was lumped in with feral. They added like 2 new buttons and shifted the rest away from other specs. This is what I believe they would do with most other classes.
Shaman - Earth warden; move anything related to the tank aspect to this spec; reimplement (they're in the files/backups) the stuff that was truly for tanking here. No new work, just rework and updates.
Priest - Wand icon?; a ranged dps spec that isn't shadow. Gets the old wand bonuses that used to exist in Discipline? A little flimsy, but eh.
Warlock - Metamorphosis; have your cake and eat it too. Removes the glyph and lets demonologists have their pure DPS role back.
Paladin - icon unknown; Holy DPS? focuses on the DPS aspects of holy shock and its ilk.
Death knight - Necromancy; Pulls the undead control away from the diseases in Unholy so that both can have their niche.
Monk - Crane; ranged DPS probably using things like spinning fire blossom and crackling jade lightning.
Tinker - new class with 4 new specs. From top to bottom, probably Alchemy (healing), Lightning (ranged DPS), Energy burst (tank) and rockets (physical dps)
So, again, if this is to be believed, there are really only 5 truly new specs being built. Maybe 4; I don't really play mage to say that they have the kit for blood somewhere in their other spells.