The fact that Bittrex kept Coval leads one to think they are very close to a working platform.  It's been in the last three performing coins (if not very last) for so long, why wouldn't Bittrex de-list them if there wasn't something coming soon.

 
That's the one thing that worries me the most, I had one of my coins delisted last time bittrex announced, thought it was coval and freaked out. It was "startcoin" been listed  since 2014, I'm hoping and praying that something big gets released soon....