Apple has rolled out it’s first major update of 10.8 Mountain Lion. This release is quite small and weighs in at around 44Mb. The great news for those of us running custom hardware is that there is no major kexts that are replaced. So there is no real need to update your collection of kexts, but you should always make sure that you have a solid backup prior to installing or restarting when you are notified to restart.
Once you have a solid backup of the system, you can now restart and see. On my mackintosh, there was no issues. The system resumed normal operation. You can head over to tonymacx86 for more information on the update.
Remember to never restart your Hackintosh until you have confirmed if you need to replace any kexts with future updates from Apple.