I personally was expecting something new in subs -- either a new line or a new speaker or some kind of upgrade -- this fall. As I understand it, Axiom does much testing of subs outside on a pole and this is mostly only practical in summer and early fall. So given that there has been no further mention of this, and instead we got the new M100 and (almost) the upgraded woofers for the LFR1100, I'm guessing it will be next summer/fall at least until much new comes out in the subwoofer line.
Then again, Axiom has been known to make incremental improvements without any fanfare...
