Anyone who has been following the Mega Man Legends 3 Project will notice that Capcom has taken many different developmental procedures with the game. They involved the fans by allowing them to create a character in the game, but one thing that it never has seen yet was a green light to be developed. The 3DS game has never actually been given confirmation to be created, meaning that at any time Capcom can pull the plug without the slightest worry.
The release of the Mega Man Legends 3 Prototype Version on the 3DS eShop is explained by director Masakazu Eguchi as being an unprecedented agreement to see how much hype the game will be able to pull in with fans. Meaning that if the game does not see strong movement on the eShop then there is a high chance of the title being dropped by Capcom entirely.