He did (re-)confirm one detail about the update, now coming at a non-specific date in November: it will offer a new StreetPass game. Previously, we'd heard that additional content for StreetPass Mii Plaza was coming, but we assumed it would be limited to expansions of the two existing built-in games, Find Mii and Puzzle Swap. We'll likely see a full reveal of this new game at tomorrow's Japanese event.