About.com have more information on Castlevania: Lords of Shadow – Mirror of Fate for the Nintendo 3DS, courtesy of a copy of Nintendo Power magazine. Mirror of Fate, they report, takes place 25 years after Lords of Shadow and the game involves time travel.
You’ll start out playing as Trevor Belmont, but at some point in the game, Simon Belmont will become a playable character as well. Two other characters have been hinted at but have not been named yet. You switch between the four characters at predetermined points in the game, as you work your way through Dracula’s castle during different time periods.
Each character will have unique abilities. For example, one may have a double-jump while another may not. More specifically, Trevor can use light and shadow magic, while Simon has different sub-weapons and can summon mystical guardians to fight for him or protect him from harm.
Nintendo Power also mention that the focus of Castlevania: Lords of Shadow – Mirror of Fate will be non-linear exploration. The game is planned for release in fall 2012.