All of that is just a roundabout way of saying this: the third Tantei Jinguuji Saburo game, with a scenario by Final Fantasy VII/VIII/X and Super Smash Bros. Brawl scenario writer Kazushige Nojima is out in Japan today, and we shouldn't expect Aksys to pay to translate it for the few people who would drop $5.
Prospects are significantly better for Wonder Boy III: Monster Lair -- so much better, in fact, that it's already out in the US and Europe, albeit on a different console. Rastan Saga 2, an awkward-looking Taito action-platformer about a big barbarian dude, is pretty much a lock as well, because Hudson is nice.
As for WiiWare, judging by Nintendo of Japan's WiiWare page at the time of writing ... nothin'.
- Tantei Jinguuji Saburo: Kiken na Futari Zengo-hen (Famicom Disk System, 1 player, 500 Wii Points)
- Wonder Boy III: Monster Lair (Mega Drive, 1-2 players, 600 Wii Points)
- Rastan Saga 2 (PC Engine, 1 player, 600 Wii Points)