This just in - and Joe says that Ronnie himself gave the go ahead to finally share.

Yes, the Naiad Sea Serpent Riders are coming.  They are in metal, and will retail for $34.99.  They are currently slated for an October release (along with the new Earth Elementals).  I know what I'll be thankful for in November.

Now wipe the drool off your face and enjoy.
Naiad Sea Serpent Riders
I think I'm going to replace mine.
My conversion
Because it is all fun and games . . .