A user on Twitter put out some photos of a German magazine that contained an article about Mortal Kombat X. In that article you can see photos of Kano.
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Additionally, Ed Boon is notorious for being a troll on Twitter. Here's a tweet that reveals a potential character (that makes sense since the character debuted in MK:DA; the fifth installment)
RT @JJswift35: @noobde I triple double dare you to put THIS GUY in MKX https://twitter.com/JJswift35/status/495843474047242240/photo/1 EB: DOUBLE dare? In that case....