As is the case with most games these days, Shin Megami Tensei IV has pre-order bonuses that vary depending on where you plop down the money. Currently GameStop, Amazon Canada, and EB Games Canada each have their own costumes that can be yours if you pre-order at those specific stores.
GameStop offers up some golden armor with a subtle GS emblazoned, and you can see that and the other two downloads below.
EB Games Canada:
Shin Megami Tensei IV arrives on Nintendo 3DS in North America on July 16. As previously reported, the first run of the release will come in the form of a snazzy limited edition. A specific release date for Europe has not been announced.