Animal Crossing: Happy Home Designer Masterpost

While it is not an Animal Crossing "main game," as I'd call it, and is instead spinoff/mini-game type, it's still a part of the Animal Crossing series and is something to look forward to! I have intentions to fully cover the game when it comes out (and probably take a break from New Leaf).

Upon recent announcement of Happy Home Designer, I've been on the hunt lately for any and all information regarding this upcoming Animal Crossing game.
Below is a list of useful articles

Image captured from this video; Animal Crossing: Happy Home Designer E3 2015 Trailer by Nintendo

ANIMAL CROSSING: HAPPY HOME DESIGNER, for Nintendo 3DS Information
Official Nintendo post, with the English trailer
Japanese Introduction Video with English subtitles (9+ minutes of info!)
Animal Crossing Wikia Article, with pictures
Nintendo @ E3 Post with screenshots + places to pre-order
Nintendo Everything: Game Artwork released by Nintendo
IGN's information page in preparation for guides, etc.
EuroGamer's information on the Amiibo Cards
Siliconera's Article: [...] Gets A Limited Edition New 3DS XL In Japan
GameZone Article: Early buyers [...] will get a free 3DS Theme in Japan 

If you feel anything has been missed, please comment below and I'll be happy to add it up here!