WordPress MU 2.6

Version 2.6 of WordPress MU is now out! WordPress MU is the multi blog version of the popular blogging software WordPress. It’s the engine behind and many other blogging sites.

This version of WordPress MU is based on WordPress 2.6. There’s a long and interesting post on the new features in 2.6 so get over there to read up on post revisions, “Press This!”, Gears, Theme Previews, and the long list of developers who helped make this release a reality.

Some of the new features in this release of MU:

  1. Version number is 2.6 rather than 1.6 because it just makes sense to synchronise the major version numbers.
  2. Signup page now has a nonce which should help in the fight against spammers, for a short while anyway.
  3. Redirecting to the signup page for 404s and for unknown blogs is not enabled by default. Check out wp-config-sample.php for instructions.
  4. “allowed_themes” filter, much like the plugins filtered added previously.
  5. New functions: get_id_from_blogname(), is_main_blog().
  6. get_blog_details() can now take a blogname as well as a blog_id.
  7. Custom first posts didn’t always work. Now they do.
  8. Blognames in the “Add blog” form in wpmu-blogs.php are now sanitized.
  9. Added “pre_site_option_*” and “site_option_*” filters like the similar option filters.
  10. Meta fields will be passed on signup again.
  11. Added an “admin_header_navigation” filter so the top right navigation in the backend can be customised.
  12. The signup page uses “blogname” instead of “blog_id” to avoid confusion with the global variable of the same name. Plugins will break if not updated!

That last change is quite a major one. If you have any plugins that interact with the signup form they will need to be updated!

This release also addresses some security issues spotted by Alexander Concha and Juan Galiana. Thank you both for alerting us and for your patience while this release was prepared!

By Donncha

Donncha Ó Caoimh is a software developer at Automattic and WordPress plugin developer. He posts photos at In Photos and can also be found on Twitter.

51 replies on “WordPress MU 2.6”

Thanks Holy

and Jorge this version called stable which will make it more stable and have less bugs than the beta version

I hope i helped !!

[…] WordPress anuncia la versión 2.6 de su versión MultiUsuario, un salto bastante interesante repleto de novedades que harán que los usuarios de MU disfruten de las nuevas ventajas de WordPress 2.6.[Descargar] Compártelo ← 5 reglas para darle nombre a tus variables […]

Hi Donncha,

I’m new to mu and so far I love it. I’m going to have my undergraduate students blogging soon!

I am running 2.5.1 (1.5.1, I guess) and don’t know how to upgrade. There aren’t instructions on the codex. I am familiar with how to do it on “regular” WordPress.

Any instructions forthcoming?

Thanks so much for all your hard work, on this and on the excellent cache plugin.


Thank so much…

i just finish install 1.5.1 to learn how to create community blog, and now 2.6 is coming.

what a wonderfull world 🙂

Thanks WordPress Team and Doncha

[…] engine that powers the, and many other blogging sites. Donncha announced the release of WordPress MU 2.6, which is based on recently released WordPress 2.6 […]

[…] 修复发送第一篇日志的问题。 此外,还增加了一些系统函数,可供使用者和开发者利用。更详细的更新信息,可以查看这里。 […]

[…] 修复发送第一篇日志的问题。 此外,还增加了一些系统函数,可供使用者和开发者利用。更详细的更新信息,可以查看这里。中文语言包下载: 标签 : WordPress 引用通告 : 你可以复制 本链接 在其他网站上引用本文。 […]

Thanks for this easy to sort reference.

I’ve been toying with the idea of launching a WordPress MU and this has given me the “boost” I needed to get that started!

[…] 修复发送第一篇日志的问题。 此外,还增加了一些系统函数,可供使用者和开发者利用。更详细的更新信息,可以查看这里。 […]

Thanks a lot~ I upgrade my subdomain install and found the theme preview images are all broken with an addtional slash in the pictures’ url, would you please investigate this issue? Thank you!

4. “allowed_themes” filter, much like the plugins filtered added previously.

I didn’t know there was a filter for allowed plugins. Do you have more information on that (or can you share a link)?


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