Indigo is approaching EOL. I announced the previous sync as the penultimate one: Preparing for Indigo Sync 2019-04-23
Trusty is effectively EOL now. That chart you link to is deceptive. April 2019 has been the EOL date, but there’s now new paid service from Canonical called Extended Security Maintenance which you can use, but it’s not the general release support we’re used to.
Extended Security Maintenance is a paid option through Ubuntu Advantage to get extended support and security updates for select server packages.
| Version | Supported Packages | Start of ESM | # of Years | End of Life |
|---|---|---|---|---|
| Ubuntu 14.04 ESM | SecurityTeam/ESM/14.04 | April 25, 2019 | 3 years | April 2022 |
Lets update the Distributions file in a week after the final sync.