Seems to be taking off on Bittrex! Hope to see it added elsewhere soon.
Harmony coin is on the voting list on poloniex and has now 100 votes in the top 10 ranking so it will happen pretty soon if votes keep flowing at this rate.
All the last updates are also at the harmony coin facebook group
https://www.facebook.com/pages/Harmony-Coin-HMY/707333082659540?ref=hlVoted, and am mining on the MP. Looking forward to new heights.