MMO-Champion has an interview blurb from Ghostcrawler that states epic gems will be dropping from the new raid in Patch 4.3. This would seem to confirm that epic gems will not be available via any crafting mechanic. Apparently things are reverting back to the Burning Crusade model of gem acquisition, which none of us wanted to see. There's no information on how the recipes to cut these gems will be acquired. It might be safe to assume that these will also be raid-based (in BC they were unlocked with raid faction initially). So there's a good chance that non-raiding Jewelcrafters will be left out of the epic gem frenzy.
I know many of you will be unhappy about this development. Given the slow rate at which the Devs claim that epic gems will drop, the market for rares may stay reasonably viable for awhile. But at this point you guys might want to brace yourselves that your JC alts won't be able to do epic cuts. I certainly hope that Jewelcrafters will gain some new items in 4.3 to make up for this loss. Further into the post, Ghostcrawler mentions that new profession recipes will be added as well. I gotta think that some type of JC love is appropriate here to make up for the loss of epic gems.
Feel free to discuss your thoughts in the Comments, I'm sure you have some. Here's hoping we get some good news soon to make up for this whammy :(