The locale data based on the Unicode Consortium's CLDR has been upgraded to version 44. Besides the usual addition of new locale data and translation changes, there are two notable date/time format changes from the upstream CLDR:

- Mexico and Latin American countries changed their time formats from 24 hours to 12 hours ([CLDR-16358](https://unicode-org.atlassian.net/browse/CLDR-16358))
- The `FULL` date format for Australia and the United Kingdom no longer has a comma after weekday ([CLDR-16974](https://unicode-org.atlassian.net/browse/CLDR-16974))

Note that those locale data are subject to change in a future release of the CLDR, so users should not assume stability across releases. For more detailed locale data changes, please refer to the [Unicode Consortium's CLDR release notes](https://cldr.unicode.org/index/downloads/cldr-44).