Wait a bit longer. If it says it's out for delivery it definitely should be there today. It depends on how busy they are. They start in the morning and the usually go until they're done or until 8 a'clock at night. I didn't get my laptop in the mail until 8:30 this one night.
Just be a bit more patient. If it doesn't come today, there's something wrong.
I bet you have it by now.
If for some reason they just could not deliver (truck broke down, sorted wrong) you will see "exception" in the status later this evening.
they can deliver up to 9pm at night - residential deliveries are usually after business hours.
patience is a virtues try develop some next time they say ship