Ok droogs, I splurged and now I have this spanking new copy of Poser 13 on my rig 

And I've yet to notice a difference. 

Anything exciting I should look out for?
I mean, I've done a few renders and they came out as expected. Sure, I set up my preferences to match my Poser 12 settings and sorted out my scripts menu but so far, I am missing a seismic shift in the earth rotation or rendering supernova.. Should I expect that?

Naturally, my examination of the materials room was merely cursory, so I expect here is where I expect (to quote Monty Python) "My nipples explode with delight". 

Not downloaded the core content library because I suspected that it is the same as Poser 12 but maybe I'm wrong.