About the "limited time" thingy, it's probably going to release again not too long after the "expire date". Kinda like what they did with Super Mario All Stars and Kirby Dream Colleciton on the Wii. Note, just my supposition.
If you're asking (I know you aren't, but I like talking
) I probably won't get it until, like, a week or two. Just to know if I'm buying the same cartridges and discs I already have or there is even a little tiny smally change