Since WordPress 3.0, released in June 2010, the themes bundled with WordPress core have been named twentysomething, starting from twentyten.
The latest is Twenty Twenty-One ( twentytwentyone ), released with WordPress 5.6, ready for 2021.
2010 2011 2012 2013 2014 2015 2016 2017 2019 2020 2021
Here’s a table of the themes bundled into WordPress core by version.
WordPress | 2021 | 2020 | 2019 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
5.6 | ||||||||||||
5.5 | ||||||||||||
5.4 | ||||||||||||
5.3 | ||||||||||||
5.2 | ||||||||||||
5.1 | ||||||||||||
5.0 | ||||||||||||
4.9 | ||||||||||||
4.8 | ||||||||||||
4.7 | ||||||||||||
4.6 | ||||||||||||
4.5 | ||||||||||||
4.4 | ||||||||||||
4.3 | ||||||||||||
4.2 | ||||||||||||
4.1 | ||||||||||||
4.0 | ||||||||||||
3.9 | ||||||||||||
3.8 | ||||||||||||
3.7 | ||||||||||||
3.6 | ||||||||||||
3.5 | ||||||||||||
3.4 | ||||||||||||
3.3 | ||||||||||||
3.2 | ||||||||||||
3.1 | ||||||||||||
3.0 |
Note: There wasn’t a default theme for 2018.
I’ve updated my dynamic API reference for the themes that are delivered in WordPress core. See wp-a2z.org.
Note: The main SVN repositories contain all of the above themes.
For more info on WordPress source see wordpress.org/download/source