For what it's worth, Emily Rogers says U.S. 3DS owners should be excited for the firmware update due out this Monday. She can't say why specifically, but all signs point to Miiverse for 3DS and the new Nintendo Network ID. What I know: Emily Rogers is some chick who writes about Nintendo, and Nintendo fans seem to care about what she has to say. NNID aren't the droids you're looking for. It's a wallet system that connects Wii U and 3DS, not a true account system (from what I understand -- correct me if I'm wrong, sorry). Miiverse is essentially Tumblr for Nintendo platforms (?) Anyway, we'll see what happens. Update is due this Monday Dec. 9.