根据官方的公告，2018-1-4开始公开测试，2018-2-27全面支持，AppNode也会跟随官方节奏尽快支持通配型证书。

https://letsencrypt.org/2017/07/ ... oming-jan-2018.html

QuoteWe introduced a public test API endpoint for the ACME v2 protocol and wildcard support on January 4, 2018. ACME v2 and wildcard support will be fully available on February 27, 2018.