Hm, interesting. Thought this was a glitch, but now... http://puu.sh/mKU92/1718fc50bf.jpg ...I still think it is.
EDIT: http://forums.terraria.org/index.php?threads/pc-is-getting-controller-support.39954/page-4#post-886063
Unfortunately, I'm not allowed to talk about the future of any of our projects unless it is public knowledge.
http://puu.sh/mKU92/1718fc50bf.jpg
...I still think it is.