Hydrophobia and the game's developer, Dark Energy Digital, the studio was doing its best to respond to fans' criticisms of the first, not-so-warmly received installment. The plan all along, however, has been a Hydrophobia trilogy, which likely explains why a listing for something called "Hydrophobia Prophecy" has popped up on the Australian Government's classification website.
Outside of noting Dark Energy Digital as the "author" and Microsoft Game Studios as the publisher, the listing provides little other information. Though it does confirm some important basics, like acknowledging that Prophecy is a video game and not, say, a line of Hydrophobia-branded sunglasses. We've reached out to Dark Energy Digital, but we're not exactly holding our breath for confirmation.