Looks like Jeremy has a few new subs to show off over at Reaction:
Echo 15
Echo 18
Gamma 15
Gamma 18
Gamma 218
The big change for most of the line appears to new power plant, courtesy of US sourced ICE amps from SpeakerPower. Besides new amps, driver constructions has been reworked and updated to offer even more performance.
I have some quick comparison CEA-2010 numbers, but since RA still not made them public yet (due to double checking) I probably shouldn't post them ether.
Lets just say than with small price reduction, comes an small but nice improvement in bass response and very noticeably in lower bass (16-25hz)