Their most valuable dev left them for zclassic. That's why zclassic price kept increasing from 4.30 to 5.20 dollar in like 10hours. But because of ddos and bittrex it dropped again to regular price. I've read somewhere that two new guys joined zclassic, i believe on tweeter. They also dumped their Zen stack that why it had big drop from 12 to like 9