WordPress 2.3 is gonna be released pretty soon but before you get all excited, there’s something you might want to know before you upgrade your WordPress installation. If you aren’t aware of it yet, this version has some plugin compatibility issues due to some schema changes that can result in breaking the plugins that you’re currently using.
WP 2.3 changes the database schema in 3 ways but the one with the biggest impact are the taxonomy related changes. What happened is that the development team decided to drop the categories, post2cat, and link2cat tables. This means that any plugin that use or require these tables will break.
In my case, there’s one particular plugin I’m using which is really important to my blog and is affected by this issue: the UTW or Ultimate Tag Warrior plugin. I hope the author would find a way to fix the problem or that the WordPress development team would make it easy for UTW users to import tags used by the plugin into the WordPress tagging system.
The WordPress community has started a list to help users and plugin authors to identify which plugins are working/compatible with WordPress 2.3 and which ones don’t or needs updating. To find out the compatibility of your current plugins, check out the WordPress 2.3 plugin compatibility list.
Btw, those of you who have been testing WordPress 2.3 Beta, you are encouraged to add to the plugins that you’re using and categorize them whether they work or needs work.