I suspect that due to the removal of stats such as: MP5, Spell Power, Attack Power, and Armor Penetration. All the new gems and current gems will be updated/ removed. I am seeing that expertise, hit, spell penetration, parry, dodge, block rating. and resilience are remaining as stats.
Gems that are likely to stay-
Bold - Strength
Delicate - Agility
Flashing - Parry Rating
Precise - Expertise Rating
Subtle - Dodge Rating
Deadly - Agility and Crit Rating
Deft - Agility and Haste Rating
Etched - Strength and Hit Rating
Fierce - Strength and Haste Rating
Glinting - Agility and Hit Rating
Inscribed - Strength and Crit Rating
Lucent - Agility and Resilience
Resplendent - Strength and Resilience
Brilliant - Intellect
Mystic - Resilience
Quick - Haste Rating
Rigid - Hit Rating
Smooth - Crit Rating
Forceful - Stamina and Haste Rating
Intricate - Spirit and Haste Rating
Jagged - Stamina and Crit Rating
Misty - Spirit and Crit Rating
Seer's - Spirit and Intellect
Shattered - Spell Penetration and Haste Rating
Shining - Spirit and Hit Rating
Steady - Stamina and Resilience
Tense - Spell Penetration and Hit Rating
Timeless - Stamina and Intellect
Turbid - Spirit and Resilience
Vivid - Stamina and Hit Rating
Solid - Stamina
Sparkling - Spirit
Stormy - Spell Penetration
Defender's - Stamina and Parry Rating
Guardian's - Stamina and Expertise
Regal - Stamina and Dodge Rating
Shifting - Stamina and Agility
Sovereign - Stamina and Strength
Red and orange gems will stick to physical dps.
Blue and Green gems will stick to spell casters.
Blue, Red, and Purple gems will stick to tanks.
Now this brings up some interesting questions:
What will happen to all who used tokens (Like they will matter in Cata) for recipes that aren't these?
Will there be a Shield Block Rating gem to make up for the loss of gems?
Will meta gems without real stats be changed or just tossed away?
P.S. If I missed a gem in the list, please point it out.