Daylight saving kicks off on Sunday October 4 (everywhere except Queensland, WA and the NT). Don't forget to adjust the time on the tech floating around your home first thing on Sunday morning.
Any properly-patched operating system should handle the change automatically, but it's worth double-checking, and ensuring that next week's appointments aren't suddenly totally out of whack. Don't forget other devices like PVRs and mobile phones — both can potentially get time updates from their respective networks, but it isn't necessarily a given. Non-curtain-fader state residents should also check, just in case their devices decide to move into a daylight-saving-favouring mode.