The LetsEncrypt Client has rebranded to Certbot (github.com)

According to that link it's only the EFF client that has changed. The service is still LE.

Click-bait...

Here is what changed:

    Certbot, previously the Let's Encrypt Client,
    is EFF's tool to obtain certs from Let's Encrypt, and
    (optionally)autoenable HTTPS on your server.
    It can also act as a client for any other CA that uses
    the ACME protocol.

I recommend updating the title to make it clear that only the Let's Encrypt client software has changed its name (and moved to EFF). The Let's Encrypt CA has not changed anything.

More information about this move can be found here:

https://letsencrypt.org/2016/03/09/le-client-new-home.html