Announcement
| Software | Version |
| Mastodon | 3.1.0 |
| GoToSocial |
| Attributes | Mastodon | GoToSocial |
| all_day | 3.1.0 | |
| content | 3.1.0 | |
| emojis[] Custom Emoji | 3.1.0 | |
| ends_at | 3.1.0 | |
| id | 3.1.0 | |
| mentions[] Announcement Account | 3.1.0 | |
| published | 3.1.0 | |
| published_at | 3.1.0 | |
| reactions[] Reaction | 3.1.0 | |
| read | 3.1.0 | |
| starts_at | 3.1.0 | |
| statuses[] Announcement Status | 3.1.0 | |
| tags[] Tag | 3.1.0 | |
| updated_at | 3.1.0 |