MyBB 1.8 has been released to the public. If you’d like to upgrade your MyBB 1.6 forum, you’ll have to update your plugins too.
Most of your plugins will probably be updated by the plugin author. If a plugin author does not update his plugin to MyBB 1.8, you can try to upgrade it yourself.
Simply locate the plugin file in your forum’s inc/plugins folder. Open it with a text editor, I recommend to use Notepad++.
You’ll find a compatibility line that looks like this:
Change it to 18* to support MyBB 1.8, it will look like this:
Now you can upload and install the plugin. In most cases, the plugin will now work with MyBB 1.8.