This year we will continue to pursue our commitment to improving the security of the Web PKI by introducing the option to get certificates with six-day lifetimes (“short-lived certificates”). We will also add support for IP addresses in addition to domain names. Our longer-lived certificates, which currently have a lifetime of 90 days, will continue to be available alongside our six-day offering. Subscribers will be able to opt in to short-lived certificates via a certificate profile mechanism being added to our ACME API.