Let's Encrypt 宣佈支援 IDN：「Introducing Internationalized Domain Name (IDN) Support」，這代表可以申請的範圍變得更廣了：
This means that our users around the world can now get free Let’s Encrypt certificates for domains containing characters outside of the ASCII set, which is built primarily for the English language.
在「Upcoming Features」可以看到下一步應該是 ECDSA Intermediates？
Let’s Encrypt only signs end-entity certificates with RSA intermediates. We will add the ability to have end-entity certs signed by an ECDSA intermediate.
不曉得之後還會有什麼功能...