Apple has released Mac OS 10.11 called "El Capitan." Leo says this is a pretty safe install, as it's been in public beta for quite some time already. But if you need your computer for work and depend on it for important things, Leo still advises waiting. Apple users generally like to update sooner than Windows users, so this can be problematic if an application doesn't work as it should on the new operating system. A good rule of thumb is to wait until the second update to the new operating system before installing it.