Actual details about Hyperdimension Neptunia U have been revealed
It's an action spin-off Vita game being made by the Senran Kagura team, and based on the screenshots that are available I think it's pretty likely that they're just reusing the Shinovi Versus engine. Which is fine with me, since that was actually a pretty fun game. In fact this could be the strongest gameplay in a Neptunia game yet (since let's face it, that hasn't exactly been the series' forte...).
How did a game as crappy as the original Neptunia spawn such a large franchise...