| ⇢ | F | User_Agent_Info added | |
| ⇢ | F | Error_Handler added | |
| ⇢ | A | Broken_Token added | |
| ⇢ | A | Test_Device_Detection added | |
| ⇢ | A | Jetpack_Sync_Debug_Helper added | |
| ⇢ | A | WordAds_California_Privacy added | |
| ⇢ | A | WordAds_Ccpa_Do_Not_Sell_Link_Widget added | |
| ⇢ | A | Autoloader_Handler added | |
| ⇢ | A | Classes_Handler added | |
| ⇢ | A | Files_Handler added | |
| ⋮ | view more | ||
| A | ↘ | B | WPCOM_JSON_API_Upload_Media_v1_1_Endpoint got worse |
| F | ↗ | B | Jetpack_User_Agent_Info improved |
| A | ↛ | className_ABC removed | |