About CPS-3 :
The Nebula team has made a separate emulator plainly named "CPS-3 Emulator"... version 1.0 lacks any additional features, but as far as emulating the arcade goes it works damn fine
In fact it has NO problem emulating "Street Fighter 3"... I've tested it
About NAOMI-1 :
Just like you, I've seen a lot of these "NAOMI fully emulated" and "NAOMI emulator finally done" news flashes, but haven't been able to find the name of this "Dreamcast emulator that can play NAOMI games" !
The NAOMI board's security is broken, that much is certain, and yes, the Chankast team is working on their emulator to support NAOMI too...
But if you ask me this is just early rumors