It makes sense to bundle it with something other than the embedded PictoChat. PC isn't going to sell anyone on the system. It's just a neat bonus to kill time, but the novelty will die quickly unless you're 13 and bored in class. Metroid Hunters would make a nice intro to the system, sell people on the concept of the touch screen and get people psyched for wireless gaming. i'm still a skeptical about whether it'll be bundled or not though.
Has the built-in microphone been standard thus far? i remember it being rumored but not official, and then there was talk of the "special hole" being used for a headset.