| A | ↘ | B | Jetpack_Site got worse |
| ⇢ | A | Jetpack_Site::main_network_site() added | |
| ⇢ | A | Jetpack_Site::wp_version() added | |
| ⇢ | A | Jetpack_Site::max_upload_size() added | |
| ⇢ | A | Jetpack_Site::is_main_network() added | |
| ⇢ | A | Jetpack_Site::is_multi_site() added | |
| ⇢ | A | Jetpack_Site::is_version_controlled() added | |
| ⇢ | A | Jetpack_Site::file_system_write_access() added | |
| A | ↛ | Jetpack_Site::get_mock_option() removed |