I would imagine that the overwhelming majority of 'new releases' are wild or maricultured colonies that vendors take a gamble on, and place in captivity to see how their colors and growth patterns improve/degrade.
You are right about frags being $$, but 15 years ago most decent coral shops had tubs and tubs of small (6" - 8") maricultured and wild acro colonies. Blast them with enough photons and flow, and generally they did well.
These vendors below sell (presumably maricultured) colonies, and it may be worth reaching out to places like AquaSD and the like to see if any of them would be willing to special order you some. I imagine most of the big-names have a healthy and direct supply line for these. The mari/wild corals unfortunately just don't make up a large enough portion of revenue to add value when you consider the amount of real estate taken up along with the man hours to photograph, list, etc.
- corals.com (several colonies for sale currently)
- reefnation.com (large (5"-10") 'named' coral colonies at good prices)
- extremecorals.com (While I don't see many acro/SPS colonies at the moment, he gets them in and almost all of them are maricultured or wild. Might be worth reaching out. Beware the photoshop)
- reefexclusive.com (Frequently has multiple maricultured/wild SPS frags for sale from the same colony (presumably chopped and plugged). I've ordered from them before - good folks, but also beware the photoshop. May be worth reaching out).
I'm sure some of the OG's here can drop more names.
Also, while I'm not certain what licensing is required to buy/sell corals from wholesalers, I would imagine that many r2r members could order or pick some up for you. There are MANY wholesalers in Cali and Florida that you could walk into (along with someone with the requisite licensing) and hand pick them yourself depending on proximity. I did this all the time at 5 Star (5-D?) and Segrest Farms when I lived in Tampa (not sure if they are still around). And you've got ERI and
Quality Marine in Cali. I'm sure there are many, many more - these were just at the top of my head.