Varnish Software announced that they finished implementing SSL in Varnish Cache Plus.
The release will happen at at Varnish summit in Silicon Valley in early June.
Varnish Cache Plus is both a HTTP server and a HTTP client and both implementations will have SSL enabled. The HTTP Server, ie the client facing SSL is perhaps the most significant one, enabling Varnish Cache Plus to encrypt traffic between the client and Varnish.
Read more at: SSL in Varnish Cache Plus