This question is not about the installation of WordPress. Plugin authors are not REQUIRED to update their plugins every time there is a new release. Nor do they always remember to update the plugin page as to what version their plugin works with.
It is a risk to update site and you should ALWAYS backup your site and Database before updating WordPress. You should use that backup to test all of your plugins AND THEME to assure compatibility. If there is an issue you should contact the plugin or theme developer on their individual support page.