To answer your questions...
Nightmare975: There won't be any more demos, we'll only be releasing the full game. We may release teaser trailers or something like that, but that's it until the whole game is completed.
Chrono'99: As Shadow Dragon said, it's Nadia's bell. But, it isn't what the final logo will look like. We've decided to do something else for that.
Shadow Dragon: I'm the only person working on the actual development of the game, besides the people making custom scripts. Other than myself, there's Lena Andreia (spriter), RoeTaKa (composer), Final Light Ceres (artist), and Validus (other artist).