According to the Japanese Animal Crossing: Happy Home Designer website, it will be possible to share screenshots taken in the game via social media sites, which was something you could do in New Leaf, in addition to posting directly to Miiverse from within the game without having to return to the home menu. This is a common feature in most Wii U games lately, but it hadn’t been used in a 3DS game before, so far.
We also know now that the game will take 4,038 blocks of space in your 3DS.
Finally, you can find some new screenshots and couple of commercials below:
https://youtu.be/0RLdO7o2wuM
https://youtu.be/cwxzd__TPg8