I just saw the Forever Young, Songbird, Heritage, and Tie the Knot cartridges and some way or another I will find a way to get them. I might have to do them 1 at a time and have to wait til I find another job, but they will be mine eventually.
The links go straight to PC for the official pics.
I found this site called Memory Miser that has all the recent cartridges for $40 with free shipping. This is the cheapest way to get them. Even the ones on Ebay are selling for $45-50.
Good luck. If you get them before I do let me know how good they are...