In their latest video update (below), From Soy Sauce announces the release of the Definitive Edition of Glass Wing. This update is a response to one of the most requested content updates from fans of the game.
In the original release of Glass Wing, the game ends with a reverse traversal of the Twilight Trial levels of the game. So you had to go backward through them all to reach the finale of the game. A lot of fans did not enjoy this experience, and I myself had tremendous trouble beating a few of them.
From Soy Sauce listened to fans and replaced that final trial with an extended mountain level with an emphasis on flying to beat it. I haven’t had a chance to try it out just yet, but I am confident that these great developers have done a great job.