It means certs signed by Let's Encrypt will work just fine for people without any special setup. See https://helloworld.letsencrypt.org/ for an example.
This does not, however, mean that we can all start using Let's Encrypt. They're doing a slow roll-out before making certs generally available to the public. You can apply for the Beta at https://goo.gl/forms/kf0IGCeAk5, or wait until general availability later this year.
Thanks!
"Yes", except that general availability doesn't come until the week of November 16th.
Re:Let's Encrypt is Trusted
by bifurcation on Tuesday October 20, 2015 @08:53AM
(#10418811)
In a word, yes.
When a server uses a Let's Encrypt certificate, a browser will consider it as issued under an IdenTrust root CA, which the browser trusts. So it will consider the Let's Encrypt certificate trusted.
Does this mean we can now all use Let's Encrypt to generate new certificates without people running into problems?