To my knowledge, you can still occasionally purchase Neo10 drivers from Parts Express, but at $370ish a pop, (on the rare occasion they're in stock) its a hard sell, esp since you would need 8 of them for a pair of Super7s... (Thats just shy of $3000 on drivers alone..)
Danny hasn't been able to make much headway, esp considering there are still patents in place around the BG Neo10..
The PE GRS Neo10 clone is decent as a midbass driver, but can't play as low as the Neo10. It needs a separate bass driver for anything under 300Hz esp since the subs can't play up high enough to meet them. But there may still be patent issues even with those in the future, but time will tell.
If we're lucky, we may see some developments in the future, but for the time being, it's pretty slim that we'll see anything soon.