# Introducing core themes

**URL:** https://meta.discourse.org/t/introducing-core-themes/374241
**Category:** Announcements
**Created:** [July 15, 2025, 12:48pm UTC](https://meta.discourse.org/t/introducing-core-themes/374241 "2025-07-15T12:48:37Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![MarkDoerr](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/markdoerr/32/549630_2.png) [@MarkDoerr](https://meta.discourse.org/u/MarkDoerr)
#### Post date: [July 15, 2025, 2:56pm UTC](https://meta.discourse.org/t/introducing-core-themes/374241/3 "2025-07-15T14:56:06Z")

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The Horizon and Foundation themes will be added to your site, but your currently selected theme (and theme components) will remain your Default theme.

As an example, I just upgraded a personal site which only had a single theme installed, and this is the resulting theme page:

 ![Screenshot 2025-07-15 at 07.54.32](https://global.discourse-cdn.com/meta/original/4X/0/4/b/04b909ad94cfdc32a77ad903738ab9fb5adb1abd.jpeg)

My components are all still in place, enabled and working as before the upgrade.

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