I just got it over the past weekend. Just by looking, it is not easy to spot the difference between this POD and the core game; however, when I was putting them into card sleeves, I found them a bit larger than the original cards. They are very difficult to be put into the card sleeves, where the same card sleeves were used in the original core set cards without difficulty.
Got the POD expansion
Huh, I hadn't noticed that yet, thanks for the heads-up. I haven't even gotten the chance to use the new cards yet since my friends haven't been around :-(