There are instances when updating production servers, dev machines and other business critical resources which have unintended results like discovering a new issue arose from the update itself. At times these updates must be put off and patched later.
Most end user devices, laptops and computers don't suffer from the same pitfalls of updating business critical software and hardware and should be updated immediately especially when it comes to security.
If you are an Android user, don't wait to update! However, the same is true for any mobile OS. Take the time to install updates.