| D | ↗ | C | Locale improved |
| ⇢ | A | Locale::fallbackLocale() added | |
| ⇢ | A | Locale::private() added | |
| ⇢ | A | Locale::script() added | |
| ⇢ | A | Locale::variant() added | |
| ⇢ | A | Locale::language() added | |
| ⇢ | A | Locale::calendar() added | |
| ⇢ | A | Locale::collation() added | |
| ⇢ | A | Locale::numbers() added | |
| ⇢ | A | Locale::region() added | |
| ⇢ | A | Locale::currency() added | |
| ⋮ | view more | ||
| A | ↛ | Locale::getFallbackLocale() removed | |
| A | ↛ | Locale::getExtendedLanguage() removed | |
| A | ↛ | Locale::getPrivate() removed | |
| A | ↛ | Locale::create() removed | |
| A | ↛ | Locale::getScript() removed | |
| A | ↛ | Locale::getVariant() removed | |
| A | ↛ | Locale::getLanguage() removed | |
| A | ↛ | Locale::getCalendar() removed | |
| A | ↛ | Locale::getCollation() removed | |
| A | ↛ | Locale::getNumbers() removed | |
| ⋮ | view more | ||