This is a preview release. It is believed safe to use in production, but care should be taken, particularly if you use custom plugins. I owe you documentation on updating existing ones for 2.3.x, but hopefully the built in ones will give you an idea.
This release is MUCH faster. I've optimised the queries in all of the built in plugins, and by using AJAX to load the plugins, one slow one won't hold up the rest of the page load.
New in this release:
- Fix for alerts background on new machine detail page
- Even more fixes for MySQL
- Added Machine Group and Business Unit to Machine Detail page