I just finished reading the post in the official forum and I suggest that you give it a read, too, especially if you have one of these Nintendo systems. One of the biggest things I got from it was stated at the very end, "[w]e have a few more surprises in store for this coming Holiday season, but we will save those for another time." I really wonder what those surprises are. I kind of hope it's not Terraria Otherworld because I thought we should be expecting it soon, but that may be the case. Maybe they'll announce Terraria 2, which I want to see. Feel free to speculate in the comment section below.
Anyway, I still miss playing Terraria and want to play it more, so I'm definitely looking forward to this.
Please see the official forum for more info: http://forums.terraria.org/index.php?threads/dual-threat-terraria-is-coming-to-wii-u-and-3ds.28903/