It is in development, and will give a more detailed update soon! I know a few people have created 3'rd party versions, but we have not officially endorsed any 3'rd party program as of now.

Please note the BTC / USD market is in testing phase while we collect data. For now, leverages are kept low during this period, and any future changes will be publicized.

Good question about the overnight fees on the BTC / USD market - I will have a response in the next 24 hours!