Is ssh and sftp avalable?
SSH is not allowed for Linux. However in VPS you use SSH to access your Virtual Server.
sftp is not available. WS_FTP is allowed for Linux accounts.
Ws_ftp is not secure.
Will jailshell be available in the future?
The developers have been working on jailshell for a long time, it might be an option to offer ssh access after that point. But there is no timeframe for that.