XCS announced an airdrop / coin swap for Jan 2nd 2018. All the holders of XCS will receive an updated version of the smart contract increasing its stealth features and prepare if for ongoing development
Rate is extremely low atm since they only announced it to their own community.
Worthwhile to check on it since you might score some cheap coins and get a potential great privacy coins swapped for it.

https://t.me/joinchat/HEwDT0ME3VbG1OWKrcabeg