Not sure what there warranty is on the base plates, but I know it's a year on some parts. Keep that in mind.
I just sent in my complete bindings and was trying to talk them into this years, didn't even think about getting a 13/14 replacement. Good idea though I'm not sure it will happen. If they haven't updated the part that broke on your binding you'll probably get the same year you send in.
When I found those cracks I only got new base plates and had to swap all other old parts over. It wasn't until I broke the high back they asked for entire binding and said due to updated highback in 12/13 I'd probably get the newer model.