Last year, Zeus was about to start producing a series of new and better Scrypt miners. When BTC price went up, they thought it would be more profitable for them to not sell mining devices to consumers and instead started a cloud mining service. Orders were cancelled and customers were able to convert the orders into cloud shares.
Long story short: Most customers lost due to the falling BTC price nearly all invested money while Zeus made profit from maintenance fees. Like the others said, only KnC with their Titan and Innosilicon are left. I don't think in near future any more or less profitable devices with a "normal" price will enter the market, next to them. Zeus killed their reputation like stated above.