Trouble Witches has a 2.0 patch. I don't think it really brings the game in line with its arcade release, but it was a pretty big upgrade. I think it was in the works at the time they were offered an AC release, but I'm not sure if it was released before or after AC.I want to believe, but Trouble Witches (2007), which is way older than Crimzon Clover (2011), has got an XBOX 360 release and even a Nessica Live release but we've got no words about a PC upgrade.
Though I'm not really sure why anyone would expect an update to the PC game any more than they would expect a free Black Label patch for a Cave game.