The Unfinished Swan may not have been the best game of 2012 but it was certainly one of the most interesting and beautiful. Going through a world of canvas and bringing definition to it by tossing paintballs was a great mechanic which was accompanied by an intriguing story. It was quite a long wait from the first hints of the game before its eventual release, though, but it was definitely worth the wait.
Giant Sparrow, the developers behind The Unfinished Swan, have started to tease their next project. Originally titled Edith Finch, the developers have since stepped back from this and now it's simply "Unannounced Giant Sparrow Project", with only a picture of an ornate mirror to give hints as to what it might be.
Your guess is as good as mine with so little information, but I'm going to say it's probably a steampunk reimagining of Show White based off of that mirror. Alright, your guess is probably better than mine. Hopefully there'll be a faster turn around between concept and playable game for this project so we'll know for certain before too long.
Either way, I'm definitely excited to see what the creative minds at Giant Sparrow have in store for us next.