New AT ART and OC9 cartridges

Has anyone tried the latest generation of ART or OC9 Audio Technica cartridges?  Just curious as to whether they are actually "new" or "redesigned" or "improved" cartridges, or whether the "new" cartridges are an AT marketing plan.  

I have used OC9's up until a few years ago.  I liked the "house sound" of those carts.